7^x-1 =. 1

Asked by kangnasharma014 | 22nd Jul, 2020, 09:01: PM

Expert Answer:

TO solve: 7x-1 = 0.1
Taking log on both the sides, we have
log 7x-1 = log 0.1 = log 10-1
(x - 1) log 7 = -1 x log 10
(x - 1) log 7 = -1  ... (Since log 10 = 1)
x - 1 = -1/log 7
x = 1 - (1/log 7)
x = 1 - 1.1832
x = -0.1832

Answered by Renu Varma | 23rd Jul, 2020, 11:46: AM