Mathematics
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  • noamboy2006
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10 find positive real number x that satisfies $2001=x\lfloor x\lfloor x\lfloor x\rfloor\rfloor\rfloor$ Jan 6 '20
6 What is the maximum value of $\frac{7x+2y}{2x+2}+\frac{3x+8y}{2y+2}$ while $0≤x,y≤1$ Dec 15 '19
5 function defined by its derivative at a specific point Dec 7 '19
4 find maximum value of $\frac x{(x^2+1)^{\frac32}}$ with AM-GM inequality Aug 10 '20
4 Prove that “injective function $f:X\to Y$ exists” and “surjective function $g:Y\to X$ exists” is logically equivalent. Dec 28 '19
4 What is the maximum value of $\frac{7x+2y}{2x+2}+\frac{3x+8y}{2y+2}$ while $0≤x,y≤1$ Dec 15 '19
3 Maximum value of $\frac{x}{y+1}+\frac{y}{x+1}$ while $0\leq x,y \leq 1$ Dec 14 '19
2 Prove$\left(\bigcap_{i\in I}A_i\right)\cup\left(\bigcap_{j\in J}B_j\right)=\bigcap_{(i,j)\in I\times J}{(A_i\cup B_j)}$ Dec 26 '19
2 find all ordered pairs of natural numbers (x,y,z) that satisfies $x^{x^y} \cdot y^{y^z} \cdot z^{z^x} = 1990^{1990} \cdot xyz (x\lt y \lt z)$ Nov 14 '20
2 Suppose that $x=3-4t$ and $y=5+2t$. Find $x$ in terms of $y$. Dec 6 '19
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