y = 7 x^6 cos^-1 x
f' = 7[ x^6 (1/(1-x^2)) + 6x^5 cos^-1 x ]
= 7 x^6/(1-x^2) + 42x^5 cos^-1 x
If f(x) = 7x^6cos^-1x, find f '(x).
2 answers
d/dx cos^-1(x) = -1/√(1-x^2)
2 answers
2 answers
1 answer
0 answers
1 answer