Question #301982

Calculate the area bounded by y = x³, x = 0 and y = 4.

1
Expert's answer
2022-02-25T04:20:57-0500

Tracing the graph of y=x3y=x^3 shows us that the area is bounded by x=0x=0 on the left, y=4y=4 from above and y=x3y=x^3 from below, with two latter encountering at x=41/3x=4^{1/3}. Therefore, the area is given by :

S=043(4x3)dxS=\int_0^{\sqrt[3]4}(4-x^3)dx this integral can be easily calculated :

S=44314x4043S=4\cdot\sqrt[3]{4} - \frac{1}{4}x^4|^{\sqrt[3]{4}}_{0}

S=44343=343S=4 \sqrt[3]{4}-\sqrt[3]{4}=3\cdot \sqrt[3]{4}


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