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求导数 y=(x^2-5)^3+2(x^2-5)^2
人气:133 ℃ 时间:2019-09-04 09:42:43
解答
y=(x²-5)³+2(x²-5)²
y'=[(x²-5)³]'+2[(x²-5)²]'
=3(x²-5)²×(x²-5)'+2×2(x²-5)'
=3(x²-5)²×2x+4×2x
=6x(x²-5)²+8x
=6x^5-60x³+158x
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