Mathematics
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Aderinsola Joshua
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All Questions Answers
Score Newest
question
4
Approximating factorial using identity $\frac{1}{x}!\frac{2}{x}!\cdots\cdot\frac{x}{x}!=\frac{ {x}!\cdot(2\pi)^{\frac{x-1}{2}} }{ x^x\cdot\sqrt{x} }$
Feb 1
question
3
Square root of a $3×3$ matrix
Mar 19, 2021
answer
3
Necessary and sufficient conditions that a cubic equation has three positive real roots
Mar 12, 2021
answer
2
Using that $1 + z + z^{2} + ... + z^{n} = \frac{1-z^{n+1}}{1-z}$ and taking the real parts, prove that:
Apr 21, 2020
answer
2
If $a+b+c=0$, then $a^3+b^3+c^3$ is ... $0$? $1$? $a^3b^3c^3$? $3abc$?
Apr 21, 2020
answer
2
Showing that $1200x_1^2-400x_2+202>0$ given that $x_1^2-x_2>-0.005$
Mar 15, 2021
answer
2
How do you convert from Prime notation to dx/dy notation?
Mar 29, 2021
answer
2
Approximating factorial using identity $\frac{1}{x}!\frac{2}{x}!\cdots\cdot\frac{x}{x}!=\frac{ {x}!\cdot(2\pi)^{\frac{x-1}{2}} }{ x^x\cdot\sqrt{x} }$
Feb 2
answer
2
Prove that $\frac{1}{xy}\ge4$ given that $x+y=1$ and conclude that $(1+\frac1{x^2})(1+\frac1{y^2})\ge2$
Oct 22, 2017
answer
2
Surprising identities / equations
May 25, 2020

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