Solve the following equation in the real number system:
⌊log2x⌋+⌊log4x⌋=3
Since log2x>log4x, we can formulate two possibilities to make the sum of the LHS as 3, i.e. ⌊log2x⌋+⌊log4x⌋=3+0or=2+1, but since log2x=3 gives x=8 and log4x=0 gives x=1, we know x<8 and log2x=2 gives x=4 and log4x=1 gives x=4, so we can conclude the range of values of x that satisfies ⌊log2x⌋+⌊log4x⌋=3 is [4,8).
No comments:
Post a Comment