Posted by **Charles** on Thursday, August 11, 2011 at 9:50am.

I'm not sure where to start on these two problems, so any help is greatly appreciated.

1)4^x = x^2

2)5-x^2 = e^x

- calculus -
**MathMate**, Thursday, August 11, 2011 at 10:38am
I suggest a numerical approach, namely graph each side of the equation, and from the intersection point(s), do successive approximation using Newton's or other methods.

For (1), x=-0.64 approx., and for (2), there are two solutions, at x=-2.2 and x=1.3 approx.

## Answer this Question

## Related Questions

- Calculus - Show that f is continuous on (-infinity, infinity). f(x) = x^2 if x&...
- Calculus I - We're reviewing limits from the previous chapter, but I'm still ...
- calculus - I have to help teach this class tomorrow for my Senior Seminar Math ...
- Statistics - Two problems: 1. Find D sub 3 of the following data set: 60, 40, 26...
- Math - I need help with two problems. Just want to make sure that the answers I ...
- calculus - Write the complex number -4 x 3^1/3 - 4i in exponential form. I'm not...
- math - evaluating functions For some reason I can't get these 3 problems correct...
- another rotation - A hollow cylinder (hoop) is rolling on a horizontal surface ...
- Precalculus problems check? - Did I do these two problems right? P(1-sqrt2) = 8x...
- Algebra - I just cannot seem to get these two problems. Any help is greatly ...