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Math
Posted 10 months ago
Determine the area under the curve y=4x2y = 4 - x^2 from x=2x = -2 to x=2x = 2.
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Answer from Sia
Posted 10 months ago
Solution by Steps
step 1
Calculate the definite integral of the function 4x24 - x^2 from 2-2 to 22
step 2
The antiderivative of 4x24 - x^2 is 4xx334x - \frac{x^3}{3}
step 3
Evaluate the antiderivative at the upper limit of integration: 4(2)233=883=24383=1634(2) - \frac{2^3}{3} = 8 - \frac{8}{3} = \frac{24}{3} - \frac{8}{3} = \frac{16}{3}
step 4
Evaluate the antiderivative at the lower limit of integration: 4(2)(2)33=883=8+83=243+83=1634(-2) - \frac{(-2)^3}{3} = -8 - \frac{-8}{3} = -8 + \frac{8}{3} = -\frac{24}{3} + \frac{8}{3} = -\frac{16}{3}
step 5
Subtract the value of the antiderivative at the lower limit from the value at the upper limit: 163(163)=163+163=323\frac{16}{3} - (-\frac{16}{3}) = \frac{16}{3} + \frac{16}{3} = \frac{32}{3}
Answer
323\frac{32}{3} or approximately 10.66710.667
Key Concept
Definite Integration
Explanation
The area under the curve y=4x2y = 4 - x^2 from x=2x = -2 to x=2x = 2 is found by evaluating the definite integral of the function over the given interval.

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