(a) f(x)=3x^4
(b) f(x)=-5x^5
(c) f(x)=7
(d) f(x)=4/5x^10
(e) f(x)=-4x^-1
(f) f(x)=-x
2007-04-30 21:00:15 · 4 answers · asked by Ricardo 1 in Science & Mathematics ➔ Mathematics
a) 12x^3
b) -25x^4
c) 0
d) If you mean f(x) = (4/5) x^10, then f'(x) = 8x^9. If you mean 4 / (5x^10), then f'(x) = -8x^(-11).
e) 4x^-2
f) -1
2007-04-30 21:06:48 · answer #1 · answered by Scarlet Manuka 7 · 0⤊ 0⤋
In general if f(x)=cx^n then f'(x)=ncx^(n-1) we have and if c is a constant and g(x)=c then g'(x)=0 so the answers fro f'(x) is
(a)f'(x)=12x^3, (b)f'(x)=-25x^4, (c)f'(x)=0, (d)f'(x)=8x^9, (e)f'(x)=4x^-2, (f)f'(x)=-1
2007-05-01 04:09:57 · answer #2 · answered by Ahmad k 2 · 0⤊ 1⤋
ans
A: 12 x ^3
B:25x^4
C:0
D:8x^9
E: -4/x^2 read as minus 4 upon x raised to 2
f: -1
2007-05-01 04:06:12 · answer #3 · answered by Yogesh K 2 · 0⤊ 2⤋
a. 12x^3
b. -21x^4
c. 0
d. 8x^9
e. -4x^(-2)
f -1
2007-05-01 04:05:20 · answer #4 · answered by Anonymous · 0⤊ 2⤋