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求y=x^2+1/√x-5cosx+3logₐx+ln4的导数
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y'=(x²+1/√x-5cosx+3logₐx+ln4)
=(x²)'+[x^(-1/2)]'-(5cosx)'+3(lnx/lna)'+(ln4)'
=2x-[(1/2)·x^(-3/2)]+5sinx+(3/lna)·(1/x)+0
=2x-[(1/2)·x^(-3/2)]+5sinx+(3/lna)·(1/x)
=(x²)'+[x^(-1/2)]'-(5cosx)'+3(lnx/lna)'+(ln4)'
=2x-[(1/2)·x^(-3/2)]+5sinx+(3/lna)·(1/x)+0
=2x-[(1/2)·x^(-3/2)]+5sinx+(3/lna)·(1/x)
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