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以下五题都只有一个答案正确,你能不求f(a)的表达式而直接求出f(a)的值选出正确答案吗? 1.如果f(lgx)=x,则f(2)的值是( ) (A)lg2 (B)log_2(10) (C)10~2 (
Only one of the following five questions is correct, can you find the correct answer by f(a) instead of f(a)? 1. If f(lgx) = x, then f(2) The value of ) is () (A)lg2 (B) log_2 (10) (C) 10~2 (