- #1
PrudensOptimus
- 641
- 0
hi, the problem is:
∫ (8x-17)/x^2+x-12 dx = ∫ .../(x+4)(x-3) dx
so 8x - 17 = A(x-3) + B(x+4)
(A+B)x + 4B - 3A
so we have 2 eq and 2 unknown
A+B = 8
4B-3A = -17
... but the book says it's suppose to be 4A - 3B,.. I don't know what I did wrong.
Please help.
∫ (8x-17)/x^2+x-12 dx = ∫ .../(x+4)(x-3) dx
so 8x - 17 = A(x-3) + B(x+4)
(A+B)x + 4B - 3A
so we have 2 eq and 2 unknown
A+B = 8
4B-3A = -17
... but the book says it's suppose to be 4A - 3B,.. I don't know what I did wrong.
Please help.