2. If f(x) = (x e3x)/(1 + x) for x
¹ 1, then f’(1) = ?|
A. 3e3/4 |
B. 5e3/4 |
C. 7e3/4 |
|
D. 9e3/4 |
E. 4e3 |
Solution: The answer is C
Take the derivative of f(x) by using both the product and quotient rules. So that,
Substitute, x = 1, in the above equation to solve for f’(1). As follows,
