User imulsion

17 votes

6 answers

3k views

Expected number of rolls to get all sixes

asked Nov 7, 2017 at 19:50

5 votes

7 answers

6k views

The perimeter of the rectangle is $20$, diagonal is $8$ and side is $x$. Show that $x^2-10x+18=0$

asked May 10, 2013 at 16:27

4 votes

3 answers

271 views

How to calculate $(3+4i)\cdot(1+i)$

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4 votes

2 answers

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Solving equations of the form $ae^x + bx +c =0$

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3 votes

3 answers

625 views

Proving the quadratic formula (for dummies) [duplicate]

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Differentiation with the quotient rule

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2 votes

2 answers

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Roots of a sixth degree polynomial

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2 votes

2 answers

181 views

Fraction of original velocity in series of elastic collisions

asked Aug 9, 2015 at 15:46

2 votes

1 answer

1k views

Undefined term in Fourier series

asked Oct 26, 2017 at 21:13

1 vote

0 answers

639 views

Using Fourier sine transform to solve PDE

asked Oct 27, 2017 at 11:26

1 vote

1 answer

2k views

Proof that $e^x$ can be expressed in a series of ascending powers of $x$

asked Jan 7, 2015 at 20:09

1 vote

2 answers

60 views

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asked Feb 22, 2015 at 10:45

1 vote

2 answers

143 views

Why does this work, and why is it wrong?

asked Apr 7, 2015 at 19:55

1 vote

5 answers

2k views

Inductive proof that every term is a sequence is divisible by 16

asked May 13, 2015 at 18:41

1 vote

2 answers

526 views

GCSE maths question concerning indices

asked May 20, 2014 at 16:30

1 vote

3 answers

1k views

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asked Jul 29, 2014 at 10:32

1 vote

1 answer

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How to show $\frac{300}{v} - \frac{300}{v+20} = 1.25$

asked Mar 9, 2013 at 11:51

1 vote

5 answers

150 views

Find the range of values that $x$ can take if $9 \log_x5 = \log_5x$

asked Sep 21, 2014 at 15:24

0 votes

2 answers

75 views

Equation with the discriminant

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6 answers

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0 votes

3 answers

161 views

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0 votes

3 answers

597 views

Probability of success in $n$ trials

asked Apr 17, 2015 at 18:22

0 votes

0 answers

46 views

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asked Nov 8, 2015 at 20:42

-1 votes

3 answers

1k views

Finding the coefficient of $x^{10}$

asked Nov 11, 2014 at 18:15

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24 Questions

Expected number of rolls to get all sixes

The perimeter of the rectangle is $20$, diagonal is $8$ and side is $x$. Show that $x^2-10x+18=0$

How to calculate $(3+4i)\cdot(1+i)$

Solving equations of the form $ae^x + bx +c =0$

Proving the quadratic formula (for dummies) [duplicate]

Differentiation with the quotient rule

Roots of a sixth degree polynomial

Fraction of original velocity in series of elastic collisions

Undefined term in Fourier series

Using Fourier sine transform to solve PDE

Proof that $e^x$ can be expressed in a series of ascending powers of $x$

Series question with unknown limit

Why does this work, and why is it wrong?

Inductive proof that every term is a sequence is divisible by 16

GCSE maths question concerning indices

Common logarithm question

How to show $\frac{300}{v} - \frac{300}{v+20} = 1.25$

Find the range of values that $x$ can take if $9 \log_x5 = \log_5x$

Equation with the discriminant

Question on Spearman's Rank Correlation Coefficient

Integrating $\frac{1}{1+e^x}$

Probability of success in $n$ trials

Finding upper bound for sum

Finding the coefficient of $x^{10}$