Math, asked by anjum187, 1 year ago

find the double derivatives of (cosx)^2

Answers

Answered by adityaaryaas

Answer:

-2cos2x

Step-by-step explanation:

Please find the attached file.

Attachments:

anjum187: thanq very much

anjum187: I also want double derivative of xsinx

adityaaryaas: Please find the attached file.

anjum187: found it thanks

adityaaryaas: Welcome (^_^)

Answered by MrHEATHENS

d/dx (cosx)^2=2 cos x (-sinx)

on differentiating it again:-

= 2 (cosx . -cosx) + 2 (-sinx.-sinx)

= -2 cos^2 x + 2 sin^2 x

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