2019年5月19日 · $\begingroup$ 6*6=36, and this forms a square of side 6. But 9*4=36, but this forms a rectangle of sides, 9 and 4. So we see that 36 can be interpreted as a square as well …

2017年4月21日 · Most instructors prefer these as well. @GEdgar provides useful insight there on a possible distinction. Though I always prefer to restate my conclusion anyway, coming full …

The standard deviation, however (the square root of the variance) is again measured in seconds, so it measures something similar (at least, physically similar). As for why we like the square …

$\begingroup$ There are only two square roots of ii (as there are two square roots of any non-zero complex number), namely $\pm(1+i)/\sqrt{2}$.

I have a question regarding taking square roots in inequalities. I have a problem asking: Suppose $3x^2+bx+7>0$ for every real number x. Show that $|b|<2\sqrt{21}$. In an earlier question it …

$\begingroup$ Minor point: I notice quite a few elementary algebra books as well as some writers here taking the view that the n-th root of x is defined as x to the power 1/n.

Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their …

It is because the square is somehow "applied" on the function. For function, you will probably often encounter this notation, and that is because, it is the function itself that is squared, not …

Instead of finding the square root of 2, look at the square root of 200 and note that: 200 = 14² + 4.

2023年6月14日 · If you allow the use of special functions such as the Gamma function, the lower incomplete Gamma function and the regularized Gamma function, then the PDF and CDF of …