20. Logarithmic and Exponential Functions
iGCSE (2021 Edition)
20.07 Further exponential equations (Extended)
Interactive practice questions
Consider the equation $2^{9x-4}=90$29x−4=90.
a
Make $x$x the subject of the equation.
b
Evaluate $x$x to three decimal places.
Medium
2min
Which of the following is a good estimate for the value of $x$x, if $3^x=29$3x=29?
Easy
< 1min
Which of the following is a good estimate for the value of $x$x, if $2^x=\frac{1}{13}$2x=113?
Easy
< 1min
Consider the equation $13^x=5$13x=5.
Easy
1min
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