# Math Help - if f(x)=4-3x, Find K so that [integration problem]

1. ## if f(x)=4-3x, Find K so that [integration problem]

Find K so that

integral of f(t)dt from [-1,x] + K = integral of f(t)dt from [3,x]

WORK

K = integral of f(t)dt from [3,x] - f(t)dt from [-1,x]
K = integral of f(t)dt from [3,x] + f(t)dt from [x,-1]
K = integral of f(t)dt from [3,-1]

Anti-derivative = 4x-(3/2)x^2

4x-(3/2)x^2 from [3,-1]

= -4

Let me know if my work is sound.

2. It looks sound to me.