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[函数] 函数型问题比大小

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力工 posted 2024-1-4 14:52 |Read mode

函数型问题比较大小,求指点
已知实数$a,b$满足$3^a+4a=4^b+3b$,则( )
A.$0<a<b<1$ B.$b<a<0$ C.$1<a<b$ D.$a=b$
正确的是A,B,D

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realnumber posted 2024-1-5 08:35

Last edited by realnumber 2024-1-5 15:51等式成立时，可能成立的选项是()

a=b=0或1时，左右相等，
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