Find f such that f′(x)=4x2+5x−5 and f(0)=3f(x)=
f(x)=43x3+52x2−5x+3
Step 1 :Given the derivative function f′(x)=4x2+5x−5 and the initial condition f(0)=3.
Step 2 :Integrate the derivative function to find f(x): f(x)=∫f′(x)dx=∫(4x2+5x−5)dx=43x3+52x2−5x+C.
Step 3 :Substitute the initial condition f(0)=3 into the function to find the constant C: 3=43(0)3+52(0)2−5(0)+C, so C=3.
Step 4 :Substitute C=3 back into the function to get the final answer: f(x)=43x3+52x2−5x+3.
Step 5 :f(x)=43x3+52x2−5x+3