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郑豆浆's user avatar
郑豆浆's user avatar
郑豆浆's user avatar
郑豆浆
  • Member for 7 years, 11 months
  • Last seen more than 2 years ago
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7
Limit of the exponential functions: $\lim_{x\to 0} \frac{e^x-e^{x \cos x}} {x +\sin x}$
Jan 12, 2017
3
Hints to solve two quadratic polynomial.
Jan 13, 2017
2
How to calculate $\lim\limits_{x \to 0 } \frac{x}{\sin{\pi(x+2)}}$
Jan 9, 2017
2
How many solutions exist for ${a^p} - a = {n^p}$?
Jan 12, 2017
1
Find the sum of first $n$ terms of the series: $\frac{1}{1\times2}+\frac{1}{2\times3}+\frac{1}{3\times4}+\cdots +\frac{1}{n\times(n+1)}$
Jan 9, 2017
1
Show that $\frac{a+b}{2} \ge \sqrt{ab}$ for $0 \lt a \le b$
Jan 12, 2017
0
Why is the solution to this algebraic fraction simplification given like this and how was it reached?
Dec 29, 2016
0
Finding the value $k$ for which $p(k)$ (poisson distribution) is at a maximum
Dec 29, 2016
0
First Order Logic - Negation in embed functions
Jan 9, 2017
0
Help to prove that $\int_{0}^{\infty}{\sqrt{x^2+1}+x^2\sqrt{x^2+2}\over \sqrt{(x^2+1)(x^2+2)}}\cdot{1\over (1+x^2)^2}\mathrm dx={5\over 6}$
Jan 9, 2017