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January 23rd, 2016, 07:33 AM   #1
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Please help

x + 3^x < 4

I tried logarithms but couldn't get a solution. Could anyone show me their method?

Last edited by skipjack; January 23rd, 2016 at 09:19 AM.
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January 23rd, 2016, 08:11 AM   #2
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$x+3^x$ is strictly increasing, so $x+3^x<4$ when $x<1$.
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January 23rd, 2016, 08:42 AM   #3
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Thanks man.
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