y=e的X次方+cos x-log a的x次方 求y'

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y=e的X次方+cos x-log a的x次方 求y'
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y=e的X次方+cos x-log a的x次方 求y'
y=e的X次方+cos x-log a的x次方 求y'

y=e的X次方+cos x-log a的x次方 求y'

y=e^x+cosx-loga(x)=e^x+cosx-lnx/lna
y'=e^x-sinx-1/(xlna)