5.4^x-4.9^x=105 HELP ME SOLVE

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Guest Apr 29, 2014

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Best Answer

Plot a graph of the left-hand side:

5.4^x-4.9^x

It looks like there is a solution between x = 3 and x = 4. Let f(x) = 5.4^x - 4.9^x - 105 and find the value of x that makes this zero.

You need to adopt a numerical method, like the ones noted here:

The solution is (approx) x = 3.683447

Alan Apr 29, 2014

Alan · Answer 1 · 2014-04-29T03:45:10

Plot a graph of the left-hand side:

5.4^x-4.9^x

It looks like there is a solution between x = 3 and x = 4. Let f(x) = 5.4^x - 4.9^x - 105 and find the value of x that makes this zero.

You need to adopt a numerical method, like the ones noted here:

The solution is (approx) x = 3.683447