1>what is the value of d/dx(f^-1 (x)) when x=2 and f(x)=x^3+x and f^-1(2)=1

(a) 1/13 (b) 1/4 (c) 1/2 (d)7/4

2>Inverse of f(x)= cuberoot((1+x)/2x)

(a)(2x/(1+x))^3

(b) 1/(2x^3-1)

(c)(1/(2x-x))^3

(d)2x/(x^3-1)

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- February 4th 2007, 11:03 PMgracyinverse function
1>what is the value of d/dx(f^-1 (x)) when x=2 and f(x)=x^3+x and f^-1(2)=1

(a) 1/13 (b) 1/4 (c) 1/2 (d)7/4

2>Inverse of f(x)= cuberoot((1+x)/2x)

(a)(2x/(1+x))^3

(b) 1/(2x^3-1)

(c)(1/(2x-x))^3

(d)2x/(x^3-1) - February 5th 2007, 03:38 AMtopsquark