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Amar's user avatar
Amar's user avatar
Amar
  • Member for 5 years, 7 months
  • Last seen more than 5 years ago
6 votes

Showing that $\int \frac {dx}{\sqrt{x^2+a^2}} \;=\; \ln\,\biggl| x+\sqrt{x^2+a^2}\,\biggr| +C$

4 votes

Possible outcomes on a three coin flip.

4 votes
Accepted

What can be the solution for $y' - 2y = \cos x$?

2 votes

Choose one of the points (0,0), (0,1), (1,0) and (1,1) at random.

2 votes

Trigonometric-substitutions for $\int \frac{x}{\sqrt{x^2+x+1}}\,dx$

2 votes
Accepted

Probability: How to solve a probability question that has 3 variables, A, B, and C?

2 votes

Find $4\int_{0.5}^{1} \int_{0.5}^{1} (xy) dx dy $

2 votes

What's the probability of getting at least two 4s from rolling three dice?

2 votes
Accepted

Percentage based on Profit and Loss

1 vote
Accepted

Boats and Streams:::

1 vote
Accepted

Permutation and Combination-number divisible by 3

1 vote

Converting 10011.010 to binary

1 vote

Determinant properties of a 4x4 matrix

1 vote

Divide a card deck in 4 stacks of 13 cards. How do you calculate the probability that 1 of the stacks has the most hearts?

1 vote

Substitutions for the trigonometric integral $\int \cos \theta \cos^5\left(\sin \theta\right) d\theta$

1 vote

If $\sqrt{2x-5} + \sqrt{2x} = 7$, find $\sqrt{2x-5} - \sqrt{2x}$

1 vote

How to solve/rewrite this system of equations?

1 vote

Rewriting $x\left(t\right)=x_0+v_0\left(t-t_0\right)+\frac{1}{2}a\left(t-t_0\right)^2$

1 vote

Equivalence relation induced by partition

1 vote

Prove that :$\tan 70 - \tan 20 = 2\tan 40 + 4\tan 10$

1 vote

$A$ and $B$ can do a piece of work in...

1 vote
Accepted

Mixtures and Alligations

1 vote

Probability of the Product of Dice Being Greater Than Sum

1 vote

How many different sequences containing the letter "e" can be created by using the letters "a,b,c,d,e,f"

1 vote
Accepted

How to eliminate a fraction from this matrix im trying to invert?

1 vote
Accepted

Calculate the probability of exactly 3 red, 1 green and 3 black pearls being chosen?

1 vote

How to differentiate this?

1 vote

Calculate the probability of solving test positive

1 vote
Accepted

Quiz night - problem

1 vote
Accepted

Finding the slope of a tangent line to polar curve