函数求导 y=x^3(x^2-1)^2
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函数求导 y=x^3(x^2-1)^2
求详细解答方式
求详细解答方式
![函数求导 y=x^3(x^2-1)^2](/uploads/image/z/17155038-30-8.jpg?t=%E5%87%BD%E6%95%B0%E6%B1%82%E5%AF%BC+y%3Dx%5E3%28x%5E2-1%29%5E2)
y=x³(x²-1)²
y′=(x³)′(x²-1)²+x³[(x²-1)²]′
=3x²(x²-1)+x³[2(x²-1)(x²-1)′]
=3x²(x²-1)+x³[4x(x²-1)]
=3x²(x²-1)+4x^4(x²-1)
=x²(3+4x²)(x²-1)
y′=(x³)′(x²-1)²+x³[(x²-1)²]′
=3x²(x²-1)+x³[2(x²-1)(x²-1)′]
=3x²(x²-1)+x³[4x(x²-1)]
=3x²(x²-1)+4x^4(x²-1)
=x²(3+4x²)(x²-1)