Recent questions in Post Secondary

qtbabe9876a9
2022-05-22
Answered

aniawnua
2022-05-22
Answered

$\underset{x\to 3}{lim}\mathrm{arctan}\left(\frac{{x}^{2}-9}{5{x}^{2}-15x}\right)$

Factored and got...

$\underset{x\to 3}{lim}\mathrm{arctan}\left(\frac{x+3}{5x}\right)$

infogus88
2022-05-22
Answered

The matrix:

$A=\left[\begin{array}{ccc}1& 0& 0\\ 0& 1& 0\\ 0& 0& 0\end{array}\right]$

Jonathan Kent
2022-05-22
Answered

Jerry Villegas
2022-05-22
Answered

Hailey Newton
2022-05-22
Answered

I have found that we have $3\cdot {6}^{5}$ odd numbers. I understand, that if number is divisible by 3, the sum of its digits also should be divisible by 3, but I don't know how to use this...

tinydancer27br
2022-05-21
Answered

Marianna Stone
2022-05-21
Answered

Prove the above relationship by using the Boolean definition. I tried $A+{A}^{\prime}B=A+B$, but end up with $A+B+{A}^{\prime}{B}^{\prime}(C+D)$, how can I go next?

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