Advertisements
Advertisements
Question
Find x, if : log5 (x - 7) = 1
Sum
Advertisements
Solution
Consider the equation
log5 (x - 7) = 1
⇒ 51 = x - 7
⇒ 5 = x - 7
⇒ x = 5 + 7
⇒ x = 12
shaalaa.com
Interchanging Logarithmic and Exponential Forms
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Express the following in logarithmic form:
10–3 = 0.001
Find the logarithm of : 0.125 to the base 2
Find x, if : log9243 = x
Find x, if : log432 = x - 4
Find x, if : log7 (2x2 - 1) = 2
Evaluate : log2 ( 1 ÷ 8 )
Evaluate : log0.5 16
Given log2 x = m. Express 2m - 3 in terms of x.
Given log5 y = n. Express 53n + 2 in terms of y.
If log2x = a and log3 y = a, write 72a in terms of x and y.
