Because the sign only remains constant, when taking the derivative of sine. The sign flips every time you take a derivative of cosine. Sine's derivative follows a certain cycle. Start with +sine. 1st derivative: +cosine 2nd derivative: -sine 3rd derivative: -cosine 4th derivative: +sine. Back where we started.
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Finally!! I've been looking everywhere for this concept
This was so easy to understand! I don't have a background in maths and this helped me so much!! Thank you!!
I just wanna to say you deserve to be the best professor in the world 🌹
I really enjoyed watching your videos
Thanks alot 🖤🖤🖤
Very nice
Your r really some of the best professors.
Wow, thanks. Have a great day.
Cheers,
Dr. A
you saved me sir.
Why do you put a negative sign in front of the velocity and acceleration?
Because the sign only remains constant, when taking the derivative of sine. The sign flips every time you take a derivative of cosine.
Sine's derivative follows a certain cycle.
Start with +sine.
1st derivative: +cosine
2nd derivative: -sine
3rd derivative: -cosine
4th derivative: +sine. Back where we started.
You are the
low pass filter on this please... geez... squeeky pen.
I know, it's brutal. Low pass filter is good idea. So is NEWER PENS!
Cheers,
Dr. A
sir v=Acoswt and not v=-Acoswt
Sign comes along with derivative of cos