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16 votes

Problem with definition of limit (why not big delta?)

5 votes
Accepted

What is the converse of $P \implies (Q \implies R)$?

3 votes

How does the dot product "remove" unit vectors?

2 votes
Accepted

Prove that if the speed of a particle is constant, $\vec a$ is perpendicular to $\vec v$

2 votes

How many 10 letter sequences are there using 5 vowels and 5 consonants?

2 votes
Accepted

How to write the negation of a biconditional?

1 vote

Functions in Group Theory

1 vote
Accepted

Why is $\vec E \cdot \vec n = ||\vec E||$ for a vector field $\vec E$ and a unit vector $\vec n$?

1 vote

What is the negation of "there are infinitely many integer solutions $(x,y)$ where $x$ is odd"

1 vote

Determine the number of ways to choose $a_i$

1 vote

Application of differentiation.

1 vote

Hypergeometric Distribution Definition

0 votes
Accepted

Why are we allowed to make trig substitutions when solving integrals?

0 votes

Are Vectors Between Different Points (Same Magnitude, Same Direction) Distinct?

0 votes

How to come up with the negation of "all cars are black" or "all cars are black and have four seats"?

0 votes

Function with no critical point

0 votes

Binomial coefficient (7 choose 3)=Binomial coefficient (7 choose x)

0 votes

Solve the inequality $\sqrt{(x+2)(x-5)} < 8-x$

-1 votes

$\sum_{k=0}^n \binom{n}{k}\frac{(-1)^k}{k!}(k+m)!=0$.