Question

integrate e^4x dx

Answer 1

4x = t
4dx = dt

so u hav
e^tdt/4

Answer 2

multily it by 4/4 and use the top

Answer 3

\[\int \frac{1}{4}*4e^{4x}\ dx\]
is easier

Answer 4

e^4x * 1/4 + C, because if you derive it, you get 1/4 * 4 * e^4x + 0.