- #1
fr33pl4gu3
- 82
- 0
y = ( 5 x-2 ) 3 / ( 2 x+5 ) 4
I do it this way:
f(x) = (5x-2)3
g(x) = (2x+5)-4
f'(x) = 3(5x-2)2
g'(x) = -4(2x+5)-5
By using the product rule:
[3(5x-2)2](2x+5)-4 + (5x-2)3[-4(2x+5)-5]
3(5x-2)2(2x+5)-4 -4(2x+5)-5(5x-2)3
What's wrong with this answer?
I do it this way:
f(x) = (5x-2)3
g(x) = (2x+5)-4
f'(x) = 3(5x-2)2
g'(x) = -4(2x+5)-5
By using the product rule:
[3(5x-2)2](2x+5)-4 + (5x-2)3[-4(2x+5)-5]
3(5x-2)2(2x+5)-4 -4(2x+5)-5(5x-2)3
What's wrong with this answer?