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Shuri2060
  • Member for 7 years, 1 month
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10 votes
Accepted

Math subject GRE exam 9768 Q.6

9 votes
Accepted

Solving $\sqrt{8+2x-x^2} > 6-3x$.

9 votes

Expectation of the number of points inside a foursquare of a rectangle

7 votes

Explanation of this theorem on combinations

6 votes
Accepted

Amateur proof verification: Between two consecutive roots of $f'$ there is at most one root of $f$

6 votes
Accepted

Definite integral problem /doubt

6 votes
Accepted

How do I solve the system of congruences $x \equiv 1 \pmod{3}$, $x \equiv 2 \pmod{4}$, $x \equiv 4 \pmod{5}$, $x \equiv 2 \pmod{7}$?

5 votes

Not a run of the mill 20 balls in a bag problem!

4 votes

By Changing My Option, How Does This Double My Chance of Winning?

4 votes

Four statements, One statement is false math problem

4 votes
Accepted

Finding $\frac{d^2y}{dx^2}$ for $x=t^3-12t$ and $y=t^2-1$

4 votes

Is $\frac{1}{\sqrt{2}}$ a fraction or not?

4 votes

logarithm proof

4 votes
Accepted

Why does $a^2x^2+(a^2+b^2-c^2)xy+b^2y^2>0,$ imply $(a^2+b^2-c^2)^2-4a^2b^2<0$?

4 votes

Let $z$ and $w$ be complex numbers such that $|2z - w| = 25$, $|z + 2w| = 5$, and $|z + w| = 2$. Find $|z|$.

4 votes

How do I prove that the given function is continuous and monotonically increasing?

4 votes
Accepted

Find the smallest value of $n$ such that $19 \,|\, 10^n+1$

4 votes

Is this a decimal rule?

3 votes

What does it mean for a prime to occur to an even power?

3 votes
Accepted

Expected number of heads on coin flip?

3 votes
Accepted

find a finite set of integers

3 votes

How to find the parametric curve representation in polar coordinates for $(x-1)^2+(y+1)^2=8$?

3 votes
Accepted

If $s=1+\frac 12+\frac 13+......+\frac 1n$,then show that $(n+s)^s \gt n^n(n+1)$.

3 votes
Accepted

Calculating number of seed bags need for planting for a given number of acres

3 votes

What would be the product of three numbers given the following information.

3 votes
Accepted

Sphere inside a pyramid

3 votes
Accepted

Prove $1 + x + x^2 + x^3 + x^4 > 0$

3 votes

Proof of a composition of functions

3 votes

Taking implicit derivative of $(x^2 + y^2)^3 = 5x^2 \cdot y^2$

3 votes
Accepted

what is smallest possible value of range of $7$ values given that their mean is $12$ and their median is $9$

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