3^(y+1)=4^y 求y
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3^(y+1)=4^y求y3^(y+1)=4^y求y3^(y+1)=4^y求y3^(y+1)=4^y3^y*3=4^y4^y/3^y=3(4/3)^y=3y=log3_(4/3)=log3_4-log
3^(y+1)=4^y 求y
3^(y+1)=4^y 求y
3^(y+1)=4^y 求y
3^(y+1)=4^y
3^y*3=4^y
4^y/3^y=3
(4/3)^y=3
y=log3_(4/3)=log3_4 - log3_3=log3_4 - 1
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