How to find logarithm without log tables|Tricks and tips series for JEE|CBSE| NEET|CET

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  • Опубликовано: 17 июн 2018
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    How to find anti-logarithm without log tables?
    • 🔥 Anti-log (0.05) ? Ho...
    Just memorize log2=0.3010 log3=0.4771 log5=0.699 and log7=0.8451 only.
    log(6.1) = log (6+0.1) = log6 + 0.4*0.1/6 = log2 + log3 + 0.0067 = 0.3010+0.4771+0.0067 = 0.7848
    what if log(137)=log(140-3)=log2+log7+log10-0.4*3/140 = 0.3010+0.8451+1-0.0086= 2.1375 (approx)
    remember: delta x(increment/decrement) should be much more smaller than 'x'
    • 💥 Find Log 2300 withou...
    how to find perfect log. must watch.
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    other examples:
    Example 2:
    log (0.6) = log (6/10) = log6 - log 10 = log (2*3) - 1 = log2 +log3 -1
    =0.3010 +0.4771 -1 = -0.2219
    Example 3:
    log(737) as log (736) = log (32*23) =log (2^5) +log 23
    =5log2 +log (24-1) = 5*0.3010+ log24 - 0.4* 1/24
    = 1.505 + log(2*2*2*3)-0.016 6=1.505 +3log2 + log 3 + 0.4771 -0.016; now 1.489 +3*0.3010 + 0.4771 -0.016=2.88 approx
    Example 4:
    log23.32 = log(2.332*10)= log (2+0.332 ) + 1 =
    log 2 + 0.4 *0.332/2 + 1 = 0.3010 + 0.066 +1 =1.367approx
    • 💥 Find Log 2300 withou...
    note: take approximate nearest number and apply logarithm
    example(i) log (49.78999 ) as log(50); (b) log(2.3789) as log(24/10)
    (c) log (0.004568) as log(45/10000) (apply log(3) +log3 +log5 -
    log 10000 (d) log (23779) as log (24000) (apply log 24 + log 1000
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Комментарии • 277

  • @Worldofchemistryclass11and12
    @Worldofchemistryclass11and12  4 года назад +47

    Just memorize log2=0.3010 log3=0.4771 log5=0.699 log7=0.8451
    Example 1:
    log(6.1) = log (6+0.1) = log6 + 0.4*0.1/6 = log2 + log3 + 0.0067 = 0.3010+0.4771+0.0067 = 0.7848
    what if log(137)=log(140-3)=log2+log7+log10-0.4*3/140 = 0.3010+0.8451+1-0.0086= 2.1375 (approx)
    Example 2:
    log (0.6) = log (6/10) = log6 - log 10 = log (2*3) - 1 = log2 +log3 -1
    =0.3010 +0.4771 -1 = -0.2219
    Example 3:
    log(737) as log (736) = log (32*23) =log (2^5) +log 23
    =5log2 +log (24-1) = 5*0.3010+ log24 - 0.4* 1/24
    = 1.505 + log(2*2*2*3)-0.016 6=1.505 +3log2 + log 3 + 0.4771 -0.016; now 1.489 +3*0.3010 + 0.4771 -0.016=2.88 approx
    Example 4:
    log23.32 = log(2.332*10)= log (2+0.332 ) + 1 =
    log 2 + 0.4 *0.332/2) + 1 = 0.3010 + 0.066 +1 =1.367approx
    ruclips.net/video/eKdOPrWobhw/видео.html
    note: take approximate nearest number and apply logarithm
    example(i) log (49.78999 ) as log(50); (b) log(2.3789) as log(24/10)
    (c) log (0.004568) as log(45/10000) (apply log(3) +log3 +log5 -
    log 10000 (d) log (23779) as log (24000) (apply log 24 + log 1000

    • @tamilzone994
      @tamilzone994 3 года назад +3

      Madam we have come over here to remember those values not memorise them . Make us understand not be able to mug up values.

    • @eergadhinlasrinivas2708
      @eergadhinlasrinivas2708 3 года назад

      Okkk

  • @sanjanadongre4610
    @sanjanadongre4610 2 года назад +15

    Finally!! after watching many videos ,I found this method to be the most convenient one! thank you so much mam .It is very helpful🙏🏻

  • @tusharwaghmare4237
    @tusharwaghmare4237 6 лет назад +15

    thank you mam it will be really helpful for us to solve numericals fast during our exams

  • @anushka71314
    @anushka71314 3 года назад +3

    That's Awesome trick ma'am ❤️🔥 You just make it easier 👍 Thank you so much ma'am

  • @prakashdeka1834
    @prakashdeka1834 3 года назад +3

    Thank you so much ma'am❤ you really made me understand log in just 8 mins. Thank you

  • @abhisheksuman7341
    @abhisheksuman7341 5 лет назад +7

    Thank you mam I was really helpful while solving numericals.... U made this look so easy or else I had to waste lot of time in solving sums but now it's so easy to get the accurate answers THANK YOU👍

  • @gamingstation4801
    @gamingstation4801 2 года назад +7

    This procedure is really helpful in solving equilibrium and chemical kinetics so much and really easy... Really comes in handy for a competitive exam

  • @RaghaviSRaj
    @RaghaviSRaj 5 лет назад +3

    Omg....life saving tips..... thank you so much....!

  • @mauryaartistshivani6843
    @mauryaartistshivani6843 4 года назад +2

    Thank you ma'am. It is very helpful 🙏🙏🙏🙏

  • @hornet6036
    @hornet6036 2 года назад +2

    Thanks Ma'am It Helped a lot 😊🙏🏻❤️

  • @pranavmagdum5495
    @pranavmagdum5495 4 года назад +2

    Thank you mam for such amazing video👍🏻👍🏻👍🏻👌👌👌

  • @dhanamohammed5707
    @dhanamohammed5707 3 года назад +1

    U are great ma'am. Thank you for your help. Upload more!!!

  • @anjolasworld
    @anjolasworld 3 года назад +1

    Been looking for this for a while now.....Thanks

  • @jaatbhai5101
    @jaatbhai5101 3 года назад +2

    Mam you are awesome. You study very well. Thanks mam. May God bless you

  • @darshankeskar8471
    @darshankeskar8471 5 лет назад +2

    Thank you mam
    It is very impotant in hsc exam
    Thaks again and again!!!

  • @aaravmishra8984
    @aaravmishra8984 3 года назад +1

    I had been searching for this videos since last month...... 😍😍😋thanks mam......

  • @jessica.rachna
    @jessica.rachna 4 года назад +49

    You sound like you have cold 😦..still you are teaching so well ..thank you soo much mam for your help♥️

  • @zebaagulzebaagul2429
    @zebaagulzebaagul2429 4 года назад +1

    Wow maa'm kitna accha trick hai
    Thanku so much

  • @yashgaur3763
    @yashgaur3763 4 года назад +1

    amazing mam thanks it helps us a lot during exam..

  • @rajanivaishnav7473
    @rajanivaishnav7473 3 года назад +1

    Thank you maam your trick really helped me ☺️🤗

  • @minusingh6915
    @minusingh6915 Год назад

    Thank you so much mam .
    I really understand the concept

  • @ujjawalraj6096
    @ujjawalraj6096 6 лет назад

    Nice mam it was very helpful
    Continue this tricks series

  • @poojakhanapure9609
    @poojakhanapure9609 2 года назад +1

    thanks mam such a easier trick to find the log without log table . thanks for giving us so much good video.thanks

  • @ditea3804
    @ditea3804 2 года назад +1

    Ty you so much madam,after seeing this video ,solved all my problem

  • @takshitharao8083
    @takshitharao8083 6 лет назад +2

    Thankyousomuchh ma’am 😍

  • @dark3421
    @dark3421 Год назад +2

    Log 5 can be derived using log a/b= log a- logb,log 10/2=log10-log2 =0.7

  • @vishakhushi5603
    @vishakhushi5603 Год назад +1

    Thanku mam...🤗....it is very helpful...✨❣️

  • @vinayakvd6359
    @vinayakvd6359 3 года назад +1

    Superb explanation

  • @bhavanisinghrajput7710
    @bhavanisinghrajput7710 6 лет назад +2

    awesome ma'am

  • @nareinparameswaran3042
    @nareinparameswaran3042 3 года назад

    Thank you. Maaamm..❤❤

  • @vinayvini3585
    @vinayvini3585 4 года назад

    Superb madam thnsks for u r tricks..

  • @navyaprem5525
    @navyaprem5525 3 года назад

    Thanks a lot Ma'am... It helped a lot.

  • @chandrashekhargupta2138
    @chandrashekhargupta2138 6 лет назад +2

    Thanks your very much mame god bless you and help to make your future brighter. Your video lectures are very much helpful for me

  • @nikitapanwar14
    @nikitapanwar14 2 года назад +3

    Thank you so much ❤️😘 Ma'am ❣️ after watching so many videos 😊 finally I found your video easy 😁 and simple ❤️🤗Vvvvvvveeeeeerrrrrryyyyyyy helpful 😊

  • @bhavanadatar7651
    @bhavanadatar7651 3 года назад

    Helped me a lot. You are great mam

  • @CrystalMethSantaClaus
    @CrystalMethSantaClaus 2 года назад

    Thank you so much
    God bless you

  • @begood2534
    @begood2534 6 лет назад

    Superb ma'am thanks a lot

  • @geethamurugan5779
    @geethamurugan5779 4 года назад

    Thank u so much 😀😀😀reallly great

  • @snayakumari2071
    @snayakumari2071 3 года назад

    Thank u so much mam it's really help in medical test

  • @ICTHub005
    @ICTHub005 10 месяцев назад

    Brilliant

  • @arhamsaifi2469
    @arhamsaifi2469 2 года назад +1

    Perfect explanation, now no space for more confusion .... Thnxx u so much .. keep.it up ma'am

  • @anshikhajaiswara8733
    @anshikhajaiswara8733 3 года назад

    Thank you ma'am 😊❤️👍

  • @rameshgennur2999
    @rameshgennur2999 4 года назад

    thank you very much mam 💖💖💖💖👌🏻👌🏻👌🏻❤️❤️

  • @aayushsharma5134
    @aayushsharma5134 3 года назад

    ma'am prime no.s for example 13 ka log kaise nikale?

  • @adstudychannel8493
    @adstudychannel8493 2 года назад

    Really mam I am grateful to you

  • @swethaiyer8990
    @swethaiyer8990 7 месяцев назад

    THANK YOU MAM

  • @ruckmanichakravarti.1136
    @ruckmanichakravarti.1136 Год назад +1

    Thank u mam it is easy to apply in exam

  • @veenaramasamy4254
    @veenaramasamy4254 2 года назад

    Thank you so much mam

  • @gayatritandale9465
    @gayatritandale9465 5 лет назад

    Thanks mam it is very helpful.......... 👍👍

  • @rainbowvlogs8778
    @rainbowvlogs8778 4 года назад

    Thank you ❤

  • @ruckmanichakravarti.1136
    @ruckmanichakravarti.1136 Год назад

    Good use

  • @charukahathurusinghe4656
    @charukahathurusinghe4656 3 года назад

    Thank you madam 🙏

  • @prathvikulkarni9727
    @prathvikulkarni9727 2 года назад

    Thank you mam.. ❤❤

  • @gitanjalirajput5119
    @gitanjalirajput5119 4 года назад +1

    Thanks a lot mam 😊😊😊😊😊

  • @sangeethacdm5667
    @sangeethacdm5667 4 года назад

    Tq it's very use to me tq do much mam

  • @praneshrajkumar7074
    @praneshrajkumar7074 3 года назад

    thank you mam it was reallhy helpful

  • @rithinreddy7023
    @rithinreddy7023 3 года назад

    Madam in vedio u turned page next log6 means u written log2+log3 then it become log5 Na madam

    • @Worldofchemistryclass11and12
      @Worldofchemistryclass11and12  3 года назад

      WATCH MY LOG VIDEOS . log(x) + log(y) = log(xy) ruclips.net/p/PL9nSaEI0m9rcmRrloEOMeH-0EslIyoYs0

  • @user-uu5ey2je8c
    @user-uu5ey2je8c 5 месяцев назад +1

    💯👍🏼 You are the Best teacher mam ur teaching is exllent v very thanks for this video🙏✨️😇👌

  • @lekshmyreghunathannaira4090
    @lekshmyreghunathannaira4090 2 года назад

    Thank you

  • @sravyarayala1784
    @sravyarayala1784 4 года назад

    Thankuuu for your video

  • @lakshita_1521
    @lakshita_1521 3 года назад +1

    Thankyou mam😌❤

  • @TheblueTTK
    @TheblueTTK 8 месяцев назад +1

    Thanks so much this was so helpful 😊😊😊😊

  • @greatcreations4830
    @greatcreations4830 2 года назад +1

    Mam! You are using mathematical identity log(a)+log(b)=log(ab), am I right mam?

  • @gmssahouli8900
    @gmssahouli8900 5 лет назад

    Woah thanks

  • @person17_ro
    @person17_ro 2 года назад +1

    Greatest Video of all time 🔥🔥🔥

  • @ishantsrivastava1399
    @ishantsrivastava1399 5 лет назад

    Great mam ♥

  • @adityailame1193
    @adityailame1193 3 года назад

    Thank-you mam

  • @mothereditz...1571
    @mothereditz...1571 2 года назад

    Thnk u so much mam....

  • @raghavmittal9844
    @raghavmittal9844 3 года назад

    Thank you mam

  • @jaswantsiinghania9050
    @jaswantsiinghania9050 5 лет назад +2

    a BIG thanks mam .But what about logarithmic decimal values.I REQUEST you to make another video on them and also include anti logarithmic values in it because we can not cram whole log table. It would surely treat us in solving our numerical problems . Thank you MAM - one of your student who will be anxiously waiting for your next video.

  • @suratramehs7510
    @suratramehs7510 3 года назад +1

    Tq mam tq very much 🤩

  • @rajbirkaurgill2553
    @rajbirkaurgill2553 3 года назад +4

    Thanku mam this is really helpful for me but I face a problem in finding the value of log of decimal no. Mam please also prepare video for that. That will be great help from Ur side please mam.....

  • @venkeyvenkat6211
    @venkeyvenkat6211 4 года назад

    mam but for log 6 .. i thought at last u will add log 1 to it bez log( 1+2+3) makes log 6 ... is my understanding crt mam ???

  • @neetians3025
    @neetians3025 Год назад

    Awesome mam....❣️🙏

  • @user-ls7bb9eh4l
    @user-ls7bb9eh4l 5 лет назад

    thnk uh soooo much mam!!!!

  • @poojahiremath6795
    @poojahiremath6795 2 месяца назад

    Mam there is doubt to me that is when Adding or Multiplying then you were adding in case of multiplying what would happing mam..

  • @vaibhavbhatia1472
    @vaibhavbhatia1472 2 года назад

    Thank you mam it really helped

  • @snehahrsneha3186
    @snehahrsneha3186 Год назад

    Superb mam tq🙂

  • @emykirubarani3213
    @emykirubarani3213 4 года назад

    Helpful

  • @kalpnasharma3307
    @kalpnasharma3307 3 года назад +1

    Nice ,thanku mam....

  • @adogarmichael-co8co
    @adogarmichael-co8co 5 месяцев назад

    I am watching from Nigeria
    And i found your teaching so helpful.
    Thank you for this maam

  • @nikhilnani8570
    @nikhilnani8570 5 лет назад +1

    Thankyou mam

  • @nargisnaharxb
    @nargisnaharxb 6 месяцев назад

    Thank you ma'am 😢❤

  • @chittaluruankaiah3568
    @chittaluruankaiah3568 4 года назад

    Osm mam

  • @devbhoomiuttrakhand3012
    @devbhoomiuttrakhand3012 4 года назад

    TQ mam🙏🏼🙏🏼

  • @nabanitaghosh3282
    @nabanitaghosh3282 3 года назад

    Thankuy

  • @kushkanswa7213
    @kushkanswa7213 5 месяцев назад

    mam then what do we do for log and antilog of decimals

    • @Worldofchemistryclass11and12
      @Worldofchemistryclass11and12  5 месяцев назад +1

      For log, convert the decimal number into non decimal number by multiplying and dividing with 10,100 etc.

  • @alltech3185
    @alltech3185 2 года назад

    Is this for neet exam im a PCB student i dont have maths so is it compulsory to learn this?

  • @mitashabhardwaj7496
    @mitashabhardwaj7496 Год назад

    How u did log 6?? U just added log 2 and log 3...but 2 plus 3 is 5....how did u do that?

  • @GauravKumar-le3nk
    @GauravKumar-le3nk 3 года назад

    Thanku so much really it is very helpful to us 😘😘

  • @quicktech7450
    @quicktech7450 5 лет назад

    Super

  • @shivarawat1905
    @shivarawat1905 5 лет назад +1

    Thanks

  • @rengasami2231
    @rengasami2231 3 года назад +1

    In log 85,can't I approximate it to log 86 and find answer? Why should I use log 84?

  • @jamilawaisijamilawaisi1156
    @jamilawaisijamilawaisi1156 4 года назад +1

    Mam pls help me find log 1.9, pls pls

  • @renuka-ht2yg
    @renuka-ht2yg 3 года назад

    Tqsm mam u r grt 😍😀😁

  • @narutosanime.seriesbestani3919
    @narutosanime.seriesbestani3919 4 года назад +1

    But mam we can't find log of every type of numbers, like which are in 4 digit or in 5 digit and also the numbers which are in decimals

    • @Worldofchemistryclass11and12
      @Worldofchemistryclass11and12  4 года назад +2

      eg 6 digit : log ( 240010) = approximately log (24 * 10^4) = log (24) + 4 = log(2*2*2) + log (3) +4 = 3*.3010 +0.4771 +4 =5.380

  • @tiyasachatterjee3664
    @tiyasachatterjee3664 3 года назад +4

    Thank you ma'am. It is very helpful to NEET aspirants like me.

  • @pareihanbasagapam6500
    @pareihanbasagapam6500 2 года назад

    Thnk you mam😭

  • @telugumoviescenes7871
    @telugumoviescenes7871 3 года назад +1

    Tq mam

  • @kritisharma350
    @kritisharma350 4 года назад

    Thanku ❤️ mam🥰