Problem: If a and b are positive and aî€ =1,bî€ =1, then the value of blogb​a is:
Answer Choices:
A. dependent upon b
B. dependent upon a
C. dependent upon a and b
D. zero
E. one
Solution:
Let x=blogb​a;∴logb​x=logb​a⋅logb​b=logb​a;∴x=a; and ∴(B) is correct.