List questions from substitution

Published on 21 Jan 2017 - 8:43

331

Views

How can I find $\sum_{cyc}\sin x\sin y$

Published on 26 Jan 2017 - 8:08

258

Views

Substitution of variable in integral

Published on 26 Jan 2017 - 18:18

152

Views

Prove $(x+y+z)^8\ge 3^7(x^2+y^2+z^2)x^2y^2z^2$

Published on 25 Mar 2026 - 19:10

275

Views

Prove that $ (x+y)^n \le x^n +y^n$ with $x,y \ge 0 $ and $0 \lt n \le 1$

Published on 27 Jan 2017 - 20:13

129

Views

Solve for x (quadratic equation)

Published on 28 Jan 2017 - 12:16

152

Views

Inequalities with nice ideas

Published on 25 Mar 2026 - 23:35

86

Views

Using of substitution method

Published on 31 Jan 2017 - 0:09

105

Views

Solve the system ${x}^{2}+ \left( y-1 \right) ^{2}=4,z^{4}+y{z}^{2}+xz+1=0. $

Published on 01 Feb 2017 - 19:18

64

Views

Partial derivative with respect to a variable and a function of that variable

Published on 03 Feb 2017 - 13:11

267

Views

How to show this inequality $\sum\sqrt{\frac{x}{x+2y+z}}\le 2$

Published on 04 Feb 2017 - 0:19

326

Views

Integration by substitution of $\int 1/\sqrt{x(1-x)}\, dx$

Published on 05 Feb 2017 - 21:59

1.5k

Views

Is there an explicit formula that gives the value of $\sqrt{2+\sqrt{2+\sqrt{2+\cdots}}}$ for $n$ square roots?

Published on 06 Feb 2017 - 21:06

1k

Views

Can indefinite double integrals be solved by change of variables technique?

Published on 26 Mar 2026 - 22:15

168

Views

integral of a diffusion equation

Published on 08 Feb 2017 - 15:00

List Question

What is the minimum value of $x^2+y^2$ subject to $x^3+y^3+xy=1$?

How can I find $\sum_{cyc}\sin x\sin y$

Substitution of variable in integral

Prove $(x+y+z)^8\ge 3^7(x^2+y^2+z^2)x^2y^2z^2$

Prove that $ (x+y)^n \le x^n +y^n$ with $x,y \ge 0 $ and $0 \lt n \le 1$

Solve for x (quadratic equation)

Inequalities with nice ideas

Using of substitution method

Solve the system ${x}^{2}+ \left( y-1 \right) ^{2}=4,z^{4}+y{z}^{2}+xz+1=0. $

Partial derivative with respect to a variable and a function of that variable

How to show this inequality $\sum\sqrt{\frac{x}{x+2y+z}}\le 2$

Integration by substitution of $\int 1/\sqrt{x(1-x)}\, dx$

Is there an explicit formula that gives the value of $\sqrt{2+\sqrt{2+\sqrt{2+\cdots}}}$ for $n$ square roots?

Can indefinite double integrals be solved by change of variables technique?

integral of a diffusion equation

Trending Questions

Popular # Hahtags

Popular Questions