(1/2)^x+(1/3)^x的导数是多少?

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(1/2)^x+(1/3)^x的导数是多少?
(1/2)^x+(1/3)^x的导数是多少?

(1/2)^x+(1/3)^x的导数是多少?
[ (1/2)^x+(1/3)^x]'
= (1/2)^x·ln(1/2)+(1/3)^x*ln(1/3)

y=a^x
y'=a^x×lna
所以
原式= (1/2)^x ×ln(0.5)+(1/3)^x ×ln(1/3)=-(1/2)^x ln2-(1/3)^x ln3

(a^x)=(a^x)*lna
[(1/2)^x+(1/3)^x]'=ln(1/2)*(1/2)^x+ln(1/3)*(1/3)^x
=-ln2*(1/2)^x-ln3*(1/3)^x

不会,