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Multiple Choice
Find the derivative of the given function. f(x)=2x3−1+lnx
A
6x
B
x3x2−1
C
6x2+x1
D
6x−1
Verified step by step guidance
1
Step 1: Break down the function into its components. The given function is f(x) = 2x^3 - 1 + ln(x). Each term will be differentiated separately using the rules of differentiation.
Step 2: Differentiate the first term, 2x^3, using the power rule. The power rule states that d/dx[x^n] = n*x^(n-1). For 2x^3, the derivative is 3*2*x^(3-1) = 6x^2.
Step 3: Differentiate the second term, -1. The derivative of a constant is always 0, so this term contributes nothing to the derivative.
Step 4: Differentiate the third term, ln(x), using the rule d/dx[ln(x)] = 1/x. The derivative of ln(x) is therefore 1/x.
Step 5: Combine the results from Steps 2, 3, and 4. The derivative of f(x) is f'(x) = 6x^2 + 1/x.