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Multiple Choice
Let be an antiderivative of the function . Which of the following is a correct expression for ?
A
B
C
D
Verified step by step guidance
1
Step 1: Recall that an antiderivative of a function f(x) is a function h(x) such that the derivative of h(x) equals f(x). This means we need to integrate the given function f(x) = x^3 + \frac{\sin x}{x^2} + 2 to find h(x).
Step 2: Break the function f(x) into separate terms for easier integration: f(x) = x^3 + \frac{\sin x}{x^2} + 2. We will integrate each term individually.
Step 3: For the first term, x^3, the integral is \int x^3 dx = \frac{1}{4}x^4. This follows from the power rule of integration: \int x^n dx = \frac{x^{n+1}}{n+1} for n ≠ -1.
Step 4: For the second term, \frac{\sin x}{x^2}, rewrite it as \sin x \cdot x^{-2}. The integral of this term is more complex and involves substitution. The result is -\frac{\cos x}{x}.
Step 5: For the third term, 2, the integral is \int 2 dx = 2x. Finally, combine all the terms and add the constant of integration C to get h(x) = \frac{1}{4}x^4 - \frac{\cos x}{x} + 2x + C.