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Question
Math
Posted 7 months ago
g(x)=1x2t+7dtg(9)=\begin{array}{l}g(x)=\int_{1}^{x} \sqrt{2 t+7} d t \\ g^{\prime}(9)=\end{array}
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Answer from Sia
Posted 7 months ago
Solution by Steps
step 1
Apply the Fundamental Theorem of Calculus Part 1 to differentiate the integral
step 2
According to the theorem, the derivative of the integral from a constant to x of a function is the function evaluated at x
step 3
So, g(x)=ddx1x2t+7dt=2x+7g'(x) = \frac{d}{dx} \int_{1}^{x} \sqrt{2t+7} \, dt = \sqrt{2x+7}
step 4
Evaluate the derivative at x=9x=9: g(9)=2(9)+7g'(9) = \sqrt{2(9)+7}
step 5
Simplify the expression: g(9)=18+7=25g'(9) = \sqrt{18+7} = \sqrt{25}
step 6
Calculate the final value: g(9)=5g'(9) = 5
Answer
g(9)=5g'(9) = 5
Key Concept
Fundamental Theorem of Calculus Part 1
Explanation
The derivative of the integral of a function from a constant to x is the function evaluated at x.

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