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eMathHelp
  • Member for 9 years, 11 months
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0 votes

Distribute 12 elements to 4 people under conditions.

3 votes
Accepted

Largest element of matrix with unit determinant

1 vote

Proof by induction to show that $5^n \geq 4n+1 $ for all natural numbers.

0 votes
Accepted

I don't understand how to factor the expressions $\sqrt{57+40\sqrt2} - \sqrt{57-40\sqrt2}$

0 votes

Prove that this limit equals $5f'(x)$

2 votes

Find all values of a so that the circle $x^2 - ax + y^2 + 2y = a$ has the radius 2

1 vote
Accepted

Need help to understand this specific double integral

1 vote

Possibility of drawing at least two cards of the same set of 5 cards, from a deck of 40 cards after 20 draws?

1 vote

Probability : rules of subtraction

0 votes

How many ways are there to break the people into two teams of two?

6 votes

Can a limit exist at $x\to a$ but not equal to $f(a)$?

-1 votes
Accepted

Convert recursive formula to explicit

1 vote

A card is chosen at random from deck one and put into deck two, then a card is chosen at random from deck two and put into deck one.

2 votes

Complex roots of $z^5+z^4+z^3+z^2+z+1=0$

1 vote
Accepted

how many ways can a class of 30 students select a committee from the class that consists of a president, a vice president, a treasurer,and a secretary

2 votes

Show that $\frac{1-\sin2\alpha}{1+\sin2\alpha}=\tan^2\left(\frac{3\pi}{4}+\alpha\right)$

0 votes
Accepted

Prove by mathematical induction that $n! ≥ n^3$ , for $n > 5$

1 vote
Accepted

I'm having trouble computing a double integral in a probability question.

3 votes

Finding the range of a Quadratic divided by a Quadratic

1 vote
Accepted

How many permutation exists to split a sorted array into two equally sized sorted arrays

2 votes

Probability question about choosing digits between 1 and 9 and that their product is a multiple of 3

1 vote
Accepted

Find the range of logarithm function

0 votes

Find derivative of function

1 vote

Finding an ODE from a given function

0 votes

Find domain and range of the slanted hyperbola

1 vote

Find angle of rotation of hyperbola given two asymptotes

0 votes

complicated integration problem

0 votes

Calculate $\int \frac{dx}{x\sqrt{x^2-1}}$