v.s
Find the derivative of the function.
y = cos [(1 − e^7x)/(1 + e^7x)]



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cwrw238
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use the chain rule
start with sin [(1 − e^7x)/(1 + e^7x)]
now u need to find derivative of expression in brackets using quotient rule

NewbieCarrot
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imo, simplify \[\frac{ 1e^{7x} }{ 1+e^{7x} }\]
first, then take the derivative by using rules.

v.s
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quotient rule

Kainui
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\[y=\cos[(1e^{7x})*(1+e^{7x})^{1}]\]

v.s
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whats next?

NewbieCarrot
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quotient rule is the last step

v.s
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help me

ZakaullahUET
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dw:1350240374374:dw

v.s
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the derivative of e^7x= e^7x
right?

ZakaullahUET
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dw:1350240579605:dw

v.s
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okaay

v.s
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sin (1 − e^7x)/(1 + e^7x) * [(1+e^7x)(7e^7x)(1e^7x)(7e^7x)]/(1+e^7x)^2