John Liu
  • Member for 2 years, 11 months
  • Last seen this week
1 answers
5 votes
88 views
1 bookmarks
What is the value of $e^\frac{-1}{e}$?
3 answers
5 votes
202 views
1 bookmarks
Polynomial Division - Remainder when divisor is squared??
2 answers
3 votes
92 views
Exponent equation with common power
4 answers
2 votes
193 views
1 bookmarks
Sum of square roots inequality
2 answers
2 votes
137 views
Prove that $\sqrt[3]{2}+\sqrt[3]{4}$ is irrational
6 answers
1 votes
245 views
Integrate $x^3\sqrt{x^2-9}\,dx$ with trig substitution
4 answers
1 votes
88 views
The derivative of $y=x^2$ and other values of x that equal zero?
2 answers
1 votes
134 views
Complex coefficients giving real roots?
0 answers
1 votes
42 views
What is the value of real number n to the power of i?
6 answers
1 votes
160 views
What is complex number z if $z^8+16z^4+256=0$?
2 answers
1 votes
766 views
What is $-1$ to the power of a fraction?
0 answers
0 votes
13 views
Derangements vs Factorial Ratio
1 answers
0 votes
86 views
Reciprocal inequality
1 answers
0 votes
76 views
Solving AM-GM without expanding
2 answers
0 votes
37 views
Prove that quadratic field Q(√2) is closed
1 answers
0 votes
50 views
Factoring with integer coefficients vs factoring with real coefficients
1 answers
0 votes
38 views
How to prove dot product without vectors?
1 answers
0 votes
54 views
Quadratic Division without factoring
2 answers
0 votes
75 views
1 bookmarks
What is the range of the function $f(x) = \frac{7x^{2}-4x+4}{x^{2}+1}$?
0 answers
0 votes
84 views
If the roots of quadratic equation are r and s, what is the value of r-s
2 answers
-1 votes
46 views
Two specific irrational numbers summing to rational number that is not zero?
1 answers
-1 votes
41 views
1 bookmarks
Simplify $\tan^{-1}(x)+\tan^{-1}(-1/x)?$
1 answers
-1 votes
26 views
How does a hyperbola go from $(x-h)+(y-k)=-n$ to $(x-h)/a^2 + (y-k)/b^2 = ±1$?