IMathAS-libretexts

If

\displaystyle {f{{\left({x}\right)}}}={3}{\sec{{\left({4}{x}\right)}}}

, find

\displaystyle {f}'{\left({x}\right)}

.

Find

\displaystyle {f}'{\left({4}\right)}

.

[more..]

\displaystyle

Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question

Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity