How do you solve -log x = 4.176logx=4.176?

1 Answer
Dec 7, 2015

x~= 6.668xx10^(-5)x6.668×105

Explanation:

-log x = 4.176logx=4.176
color(white)("XXX") rArr log x = -4.176XXXlogx=4.176

color(white)("XXX")10^(-4.176) = xXXX104.176=x

therefore (using a calculator)
color(white)("XXX")x = 6.668xx10^(-5)XXXx=6.668×105

Remember
color(white)("XXX")log_b a = cXXXlogba=c means b^c = abc=a
and
color(white)("XXX")XXXthe default base (bb) for loglog is 1010