Apply Fundamental Theorem: Use the Fundamental Theorem of Calculus Part 1 to find F′(x). This theorem states that if F(x) is defined as an integral from a to g(x) of f(t)dt, then F′(x) is f(g(x))×g′(x).
Find Derivative of x: First, find the derivative of the upper limit of integration, which is x. The derivative of x with respect to x is (1/2)x(−1/2).
Evaluate Integrand at x: Now, apply the Fundamental Theorem of Calculus. The integrand is 2t, and we need to evaluate it at the upper limit, which is x. So we replace t with x to get 2x.
Multiply Result by Derivative: Multiply the result from the previous step by the derivative of the upper limit. So we have 2x×(21x−21).
Simplify the Expression: Simplify the expression. The (21)x(−21) cancels out the x in 2x, leaving us with just 2.
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