Q. Evaluate ∫06(7e0.5x−5)dx and express the answer in simplest form.Answer:
Identify integral: Identify the integral to be solved.We need to evaluate the integral of the function 7e0.5x−5 from 0 to 6. This can be written as:∫06(7e0.5x−5)dx.
Break into two: Break the integral into two separate integrals.The integral of a sum is the sum of the integrals, so we can write:∫(7e0.5x−5)dx=∫7e0.5xdx−∫5dx from 0 to 6.
Evaluate first integral: Evaluate the first integral ∫067e(0.5x)dx. The antiderivative of e(0.5x) is (2e(0.5x)), because when we differentiate (2e(0.5x)), we get e(0.5x) times the derivative of (0.5x) which is 0.5, and 2×0.5=1, giving us back e(0.5x). Therefore, the antiderivative of 7e(0.5x) is e(0.5x)0.
Evaluate second integral: Evaluate the second integral ∫065dx. The antiderivative of a constant 5 is 5x. So the integral of 5 from 0 to 6 is 5x evaluated from 0 to 6.
Combine and evaluate: Combine the antiderivatives and evaluate from 0 to 6. We have the antiderivatives 14e(0.5x) and 5x. Now we need to evaluate these from 0 to 6: (14e(0.5x)−5x)∣ from 0 to 6 = (14e(0.5⋅6)−5⋅6)−(14e(0.5⋅0)−5⋅0).
Perform final evaluation: Perform the evaluation using the bounds 0 and 6. First, we evaluate at the upper bound x=6: 14e(0.5×6)−5×6=14e3−30. Next, we evaluate at the lower bound x=0: 14e(0.5×0)−5×0=14e0−0=14×1−0=14. Now, subtract the lower bound evaluation from the upper bound evaluation: (14e3−30)−(14)=14e3−30−14=14e3−44.
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