- #1
chapsticks
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Homework Statement
find the derivative of the function
f(x)=arcsec(4x)
Homework Equations
I think this is a Relevant equations.
d/dx[arcsecu]=u'/(|u|(√u2-1)
The Attempt at a Solution
f'(x)=4/(|4|(√42-1)
=1/√15
I keep getting wrong in my online homework why?