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Sia

18868272922's Question
Math
Posted 6 months ago
Compute the integral of g(x)=5x4x2+8g(x) = 5x^4 - x^2 + 8 from x=0x = 0 to x=3x = 3.
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Answer from Sia
Posted 6 months ago
Solution by Steps
step 1
We need to compute the integral of the function g(x)=5x4x2+8g(x) = 5x^4 - x^2 + 8 from x=0x = 0 to x=3x = 3
step 2
The integral can be expressed as 03(5x4x2+8)dx\int_0^3 (5x^4 - x^2 + 8) \, dx
step 3
Evaluating the integral, we find: (5x4)dx=x5\int (5x^4) \, dx = x^5, (x2)dx=x33\int (-x^2) \, dx = -\frac{x^3}{3}, and 8dx=8x\int 8 \, dx = 8x. Thus, the antiderivative is x5x33+8x+Cx^5 - \frac{x^3}{3} + 8x + C
step 4
Now, we evaluate this from 0 to 3: [35333+8(3)][00+0]=2439+24=258[3^5 - \frac{3^3}{3} + 8(3)] - [0 - 0 + 0] = 243 - 9 + 24 = 258
Answer
258
Key Concept
The Fundamental Theorem of Calculus allows us to evaluate definite integrals by finding the antiderivative of the function.
Explanation
The integral of the polynomial function was computed by finding its antiderivative and then evaluating it at the bounds of integration, resulting in a final value of 258.

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