a) x^5+2x^3+x^-1-1
b)sin(ax)+e^-bx
c)(1-x)^3
d)2x^2sin(2x)
2007-02-12 22:02:30 · 3 answers · asked by Perfect-Angel84 2 in Science & Mathematics ➔ Mathematics
a) 5x^4+6x^2-x^(-2)
b) acos(ax)-be^(-bx)
c) -3(1-x)^2
d) 4xsin(2x)+4x^2cos(2x)
2007-02-12 22:21:29 · answer #1 · answered by qiza 1 · 1⤊ 0⤋
a) f(x) = x^5 + 2x^3 + x^(-1) - 1
f ` (x) = 5x^4 + 6x^2 - x^(-2)
f ` (x) = 5x^4 + 6x^2 - 1/x^2
b) f `(x) = acos(ax) - be^(-bx)
c) f `(x) = 3(1 - x) ² (-1) = -3 (1 - x²)
d) I am going to play a hunch here and say that f(x) should be:-
f (x) = 2x² . sin(2x)
f `(x) = 4x . sin (2x) + 2cos 2x . 2x²
f `(x) = 4x . sin(2x) + 4x². cos2x
2007-02-13 20:47:56 · answer #2 · answered by Como 7 · 0⤊ 0⤋
Easy - just enter the data here: http://www.webmath.com/diff.html
2007-02-12 22:08:55 · answer #3 · answered by D M L 4 · 0⤊ 0⤋