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Determine the second derivative of y=cosxtanx. Thanks :)

Determine the second derivative of y=cosxtanx. Thanks :)
asked 45.1k views
2 votes

Determine the second derivative of y=cosxtanx.

Thanks :)



asked
User Kimpettersen
by
7.7k points

1 Answer

5 votes

f(x)=cosxtanx\\\\(cosxtanx)'=\left(cosx\cdot(sinx)/(cosx)\right)'=(sinx)'=cosx\\\\(cosx)'=-sinx\\\\f''(x)=-sinx\\\\(\delta^2 f)/(\delta x^2)=-sinx
answered
User Nasim
by
7.6k points
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