Q. Find the value of ∫4610−3x9dx. Write your answer as the logarithm of a single number in simplest form.Answer: ln(□)
Recognize standard form natural logarithm: Recognize the integral as a standard form of the natural logarithm function.The integral of a−bx1dx is equal to −b1⋅ln∣a−bx∣+C, where a and b are constants. In our case, a=10 and b=3.
Apply formula to integral: Apply the formula to the integral. ∫4610−3x9dx=9×∫4610−3x1dxUsing the formula from Step 1, we get:=9×(−31)×ln∣10−3x∣ evaluated from 4 to 6.
Evaluate natural logarithm at bounds: Evaluate the natural logarithm at the bounds.First, plug in the upper bound x=6:ln∣10−3×6∣=ln∣10−18∣=ln∣−8∣Since the natural logarithm function only takes positive arguments, we use the absolute value to get ln(8).Next, plug in the lower bound x=4:ln∣10−3×4∣=ln∣10−12∣=ln∣−2∣Similarly, we use the absolute value to get ln(2).Now we have:9×(−1/3)×(ln(8)−ln(2))
Simplify the expression: Simplify the expression.9×(−31)×(ln(8)−ln(2))=−3×(ln(8)−ln(2))Since ln(a)−ln(b)=ln(ba), we can combine the logarithms:=−3×ln(28)=−3×ln(4)
Express answer as single number: Express the answer as the logarithm of a single number.Since −3×ln(4) is equivalent to ln(4−3), we can write the final answer as:ln(4−3)=ln(641)
More problems from Find indefinite integrals using the substitution