# Welcome to Free Math Help

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## Algebra

Covering pre-algebra through algebra 3 with a variety of introductory and advanced lessons.

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## Calculus

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## Trigonometry

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## Statistics

Here's where we cover basics, like the mean & and median, along with links to more advanced statistics topics.

## Solvers

Solve your own math problems with our selection of free online calculator tools.

Function Wednesday January 16, 2019
When the Modern History of Math define function, it only deal on quadratic equation and linear equation. The other equation are have a little notice. You, can investigate a function and know how it

Probably very easy question Wednesday January 16, 2019
So I haven't taken a math class in 10 years and I'm having some issues getting back into it. I'm hiring a private tutor, but in the mean time can someone help me with the below problem? I feel like

Proving that lim(x,y)->(0,0) (x^2 + x|y|)/sqrt(x^2 + y^2) = 0 Wednesday January 16, 2019
Hi, I'm stuck with calculating the following limit (or rather proving it, since I already know the result): $$\lim_{(x,y) \to (0,0)}\frac{x^{2}+x|y|}{\sqrt{x^{2}+y^{2}}}=0$$ I have no idea

How do I use substitution when there is no pre solved variable? Tuesday January 15, 2019
5x + 5y = 20 3x + y =

Graphic methods, exponential growth and decay Tuesday January 15, 2019
Hi there :smile: Would like a little help on this problem here if thats ok? Your help is greatly appreciated! Attachment 10905 (https://www.freemathhelp.com/forum/attachment.php?attachmentid=10905)