Question 1044459
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{{{graph( 330, 330, -2.5, 2.5, -2.5, 10.5,
          e^(3x), 4x^2
)}}}


Plots f(x) = {{{e^(3x)}}} (red) and g(x) = {{{4x^2}}} (green)

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Non-linear equation. Equivalent to 3x = 8ln(x), which is also non-linear.


Graphing method. Or iterations.