Asked by Allessandra
Differentiate
(1- sinx) / (1 +sinx)
How would I do this?
The answer is (-2cosx)/ (1 + sinx)^2
Thanks in advance :)!!
(1- sinx) / (1 +sinx)
How would I do this?
The answer is (-2cosx)/ (1 + sinx)^2
Thanks in advance :)!!
Answers
Answered by
Steve
d/dx (1-sinx)/(1+sinx)
[-cosx (1+sinx) - (1-sinx)(cosx)]/(1+sinx)^2
(-cosx - sinx cosx - cosx + sinx cosx)/(1+sinx)^2
= -2cosx/(1+sinx)^2
[-cosx (1+sinx) - (1-sinx)(cosx)]/(1+sinx)^2
(-cosx - sinx cosx - cosx + sinx cosx)/(1+sinx)^2
= -2cosx/(1+sinx)^2
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