Math Memes

fuck off you mong

What the fuck is the π button for?

3.1415926535

>When you take the square root of a number, the result can be both positive and negative

[math] \displaystyle
\sqrt {x^2} \ne \pm x, \quad \sqrt {x^2} = \left | x \right |
\\
|x| =
\begin{cases}
\;\;\; x & ,x \geq 0 \\
-x & ,x < 0
\end{cases}
[/math]

this phenomenon is insufferable

people don't deserve their ego most of the time

Not even the guy you replied, but he said that the result CAN, not WILL be both positive and negative

You only need to remember the first 5 decimal places mate.

no, it can't be negative

The answer is simple. The square root function is not well defined and the fact that no one makes a big deal out of this in lower education is a sign of educational malpractice.

You could "prove" the same thing even without complex numbers. Simply set

(-1)^2 = 1^2
-1 = 1

Adding complex numbers to your argument is really only tricking brainlets into thinking that something deep is going on.

The confusion you guys are having comes from the fact that the sqrt function is not surjective, while the square function happens to be bijective, so we would kind of want -sqrt(3) and sqrt(3) to correspond to 3, but we don't do that for real analysis reasons.

is wrong in saying that -sqrt(3)=sqrt(3) of course, but is right about everything else.

Perhaps if you actually read what he said it would've made a bit of sense but you are too thirsty to post your sexy latex all over to try and proove people wrong