The derivative of the function f is defined by f′(x)=x2cos(3x−3). If f(1)=7, then use a calculator to find the value of f(5) to the nearest thousandth.Answer:
Q. The derivative of the function f is defined by f′(x)=x2cos(3x−3). If f(1)=7, then use a calculator to find the value of f(5) to the nearest thousandth.Answer:
Integrate f′(x) from 1 to 5: To find the value of f(5), we need to integrate the derivative f′(x) from x=1 to x=5 and then add the initial value f(1)=7.
Calculate Antiderivative F(x): The integral of f′(x) from 1 to 5 is the antiderivative of f′(x) evaluated at 5 minus the antiderivative evaluated at 1.∫15x2cos(3x−3)dx=F(5)−F(1), where F(x) is the antiderivative of f′(x).
Use Numerical Integration: To find the antiderivative F(x), we need to use integration by parts or a suitable substitution. However, this integral does not have an elementary antiderivative, so we will use numerical integration to approximate the value.
Approximate Integral Value: Using a calculator or numerical integration software, we approximate the integral of x2cos(3x−3) from 1 to 5. This step requires the use of technology and cannot be accurately done by hand.
Calculate f(5): After calculating the integral, we find the approximate value (let's call this value 'I') and then add the initial condition f(1)=7 to get f(5).f(5)=I+f(1)=I+7.
Find f(5) Value: Assuming the calculator gave us the value of the integral as 'I' (to the nearest thousandth), we can now calculate f(5).f(5)=I+7.
Finalize Solution: Since we do not have an actual calculator or software output, we cannot provide the numerical value of the integral I or the final value of f(5). To complete this problem, you would need to use a calculator or numerical integration software to find I and then add 7 to find f(5).