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(f(g(x))' = g'(x).f'(g(x))
1)
(2x+1)^3
f(x) = x^3----------f'(x) = 3x^2
g(x) = 2x+1---------g'(x) = 2
(f○g)'(x) = g'(x).f'(g(x))
=2.f'(2x+1)
=2(3(2x+1)^2)
=6(2x+1)^2
De similar forma se resuelve los siguientes problemas.
2)
(-5).4(10-5x)^3
=-20(10-5x)^3
3)
(2x+4).4(x^2 + 4x -5)^3
4)
5(2r^4 -7r^3 + 2t-1)(8r^3 -2r^2+2)