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Aderinsola Joshua

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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 '17
2 Quartic polynomials of a complex variable Apr 20 '20
2 Asymptotes of function Apr 20 '20
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 '20
2 If $a+b+c=0$, then $a^3+b^3+c^3$ is … $0$? $1$? $a^3b^3c^3$? $3abc$? Apr 21 '20
1 How to solve exercises with polynomial with 2 parameters having all real roots? Apr 21 '20
1 Solve $ x (0\leq x<2\pi)$ for $\cos^2x - \sin x \cos x = 1$ Apr 20 '20
1 $f(f(x)) = 1 + x^2$, then what is f(1)? Apr 15 '20
1 Real Solution of $4^x + 6^x = 9^x$. Apr 14 '20
1 $a+a^2+\cdots + a^{2n} ≤ n(a^{2n+1} + 1)$ Apr 15 '20
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