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Lapatulllka [165]
3 years ago
9

Solve the inequality

0" id="TexFormula1" title=" 2^{1-x}- 2^{x+2} \ \textless \ 7 " alt=" 2^{1-x}- 2^{x+2} \ \textless \ 7 " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
valkas [14]3 years ago
5 0
Hint: substitute 2^x by say 't': t = 2^x, then you'll have an inequality with a second order polynomial (2/t-4*t<7--> ...). In the end something like t^2 + a*t+b > 0, for some values of a and b, find the roots and get the intervals where it is satisfied.
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