Differentiation question using 'tan'
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Differentiation question using 'tan'

[From: ] [author: ] [Date: 11-09-01] [Hit: ]
-The derivative of tan x is (sec x)^2 dx.In this problem the x variable is 2*x^2.The first step is (sec( 2*x^2))^2 dx.BUT we are not done. The derivative of the inside is 4x dx.4x*(sec( 2*x^2))^2 dx-.......
f(x) = tan( 2*x^2 )

find f ' (x)?

thx for your help?

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The derivative of tan x is (sec x)^2 dx.

In this problem the x variable is 2*x^2.

The first step is (sec( 2*x^2))^2 dx.

BUT we are not done. The derivative of the inside is 4x dx. and we replace this with the first answer making:

4x*(sec( 2*x^2))^2 dx

-
.

-
f(x) = tan(2x^2)

f ' (x) = sec^2(2x^2)*(4x) = 4x sec^2(2x^2)
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