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## Homework Statement

how is the differential of 1+tan

^{2}(4x)

8*tan(4x)*sec

^{2}(4x)

## Homework Equations

## The Attempt at a Solution

So 1 differentiates to 0 (we can now ignore this)

tan

^{2}(4x) differentiates to 2*tan(4x)*sec

^{2}(4x)?

BRING POWER FORWARD, DOWN POWER BY 1, DIFFERENTIATE TERM IN BRACKET

by the chain rule?