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99 Posts

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1d
 asked What is $-i$ exactly?
Apr
19
 answered Is the following statement true? Why?
Apr
19
 answered With the binomial expansion of $ (3+x)^4$ express $(3 - \sqrt 2)^4$ in the form of $p+q\sqrt 2$
Apr
19
 answered Derivative of $\sin(e^{-x})$
Apr
14
 asked Factoring a long expression in the form $(a+b)^3 + (c - b)^3 - (c+b)^3$
Apr
13
 asked $x = \sqrt[3]{3} + \frac{1}{\sqrt[3]{3}}$, what is $3x^3 - 9x$?
Apr
12
 answered The inverse function of $e^{x^2}$
Apr
12
 answered Mathematical Expressions; School Homework
Apr
12
 answered How can I prove that $xy\leq x^2+y^2$?
Mar
30
 asked Number of four-term GPs consisting of positive integers under 100: how to write a program
Mar
6
 answered Show that the sequence $\sqrt{2},\sqrt{2\sqrt{2}},\sqrt{2\sqrt{2\sqrt{2}}},…$ converges and find its limit.
Feb
27
 answered how to solve nested logarithms
Feb
24
 answered Filling the gap in knowledge of algebra
Feb
22
 answered What makes Pi special? What really makes it Irrational?
Feb
17
 answered Euler's totient function
Feb
13
 answered Proof Regarding Property of Odd Integers
Feb
12
 answered Why does a number like $2^n\bmod 7$ have a repeating pattern?
Feb
11
 answered The prime numbers that divide $10^4-1$
Feb
10
 answered Real numbers in math
Feb
9
 answered Find $a, b, c, d \in \mathbb{Z}$ such that $2^a=3^b5^c+7^d$
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