4,441 reputation
21136
bio website
location
age
visits member for 2 years, 6 months
seen 9 hours ago

I am an engineer who is in love with math and lifelong math student. I love to learn new things in mathematics for self-satisfaction. My idols are Gauss , Euler , Ramanujan because they were in love with math as I feel.


Jun
19
answered Find the remainder when $x^{100}$ is divided by $x^2-3x+2$
Jun
17
awarded  Nice Answer
Jun
10
revised To find a fifth degree equation by using circles and lines that cannot be solved by radicals
added 21 characters in body
Jun
10
comment To find a fifth degree equation by using circles and lines that cannot be solved by radicals
@mercio : I am aware that circles and lines is solvable by square roots, I wonder if we try to find angles (trigonometric equations. Please see my previous question). Thanks
Jun
10
asked To find a fifth degree equation by using circles and lines that cannot be solved by radicals
Jun
7
revised $\sum_{k=1}^{\infty} \frac{a_1 a_2 \cdots a_{k-1}}{(x+a_1) \cdots (x+a_k)}$
added 3 characters in body
Jun
7
answered A pyramid has a square base with sides of length 4. If the sides of the pyramid are equilateral triangles, what is the pyramid's volume?
Jun
5
revised $\sum_{k=1}^{\infty} \frac{a_1 a_2 \cdots a_{k-1}}{(x+a_1) \cdots (x+a_k)}$
added 200 characters in body
Jun
5
revised $\sum_{k=1}^{\infty} \frac{a_1 a_2 \cdots a_{k-1}}{(x+a_1) \cdots (x+a_k)}$
deleted 163 characters in body
Jun
5
answered $\sum_{k=1}^{\infty} \frac{a_1 a_2 \cdots a_{k-1}}{(x+a_1) \cdots (x+a_k)}$
May
30
revised Is $y'=1+y^n$ periodic function for $n>2$?
deleted 4 characters in body
May
30
comment Is $y'=1+y^n$ periodic function for $n>2$?
@vadim123 The inverse function can be expressed as $a_1\ln(y-y_1)+a_2\ln(y-y_2)+...+a_n\ln(y-y_n)=x+c$ and then $(y-y_1)^{a_{1}}(y-y_2)^{a_{2}}...(y-y_n)^{a_{n}}=Ke^{x}$ . I think that way but I do not know how to go forward to prove they are periodic like $tan(x)$.Thanks
May
30
revised Is $y'=1+y^n$ periodic function for $n>2$?
edited title
May
30
revised Is $y'=1+y^n$ periodic function for $n>2$?
edited body
May
30
comment Is $y'=1+y^n$ periodic function for $n>2$?
@lhf Please check for $n=2$ , same kind of graph it draws.wolframalpha.com/input/?i=y%27%3D1%2By%5E2
May
30
asked Is $y'=1+y^n$ periodic function for $n>2$?
May
29
accepted To evaluate $\int_0^{+\infty} \frac{\;dx}{\sqrt[3]{x^3+a^3}\sqrt[3]{x^3+b^3}\sqrt[3]{x^3+c^3}}$
May
22
revised How to find the curve equation
added 2 characters in body
May
22
asked How to find the curve equation
May
21
comment Easiest way to prove integral of $e^{ikx}$ is $\delta(k)$
Please see other answer .As i wrote, Priyatham's answer gave that proof