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  • Member for 7 years, 10 months
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11 votes

What's the proof that the Euler totient function is multiplicative?

4 votes
Accepted

help with logarithmic integration.

4 votes

When has one sufficiently mastered an area of mathematics?

4 votes

How to do integration of $∫\tan (x) dx $

3 votes
Accepted

Solving ODE $x' = \lambda x^2$

3 votes
Accepted

Sturm-Liouville Eigenvalue Problem

3 votes

How to calculate derivative of $f(x) = \frac{1}{1-2\cos^2x}$?

3 votes

What am I doing wrong here? Simplifying quotient of $2/x$ and $4/(x+4)$

3 votes

Prove this trigonometric identity?

3 votes

Definition of ordinary differential equation

3 votes
Accepted

If R is $(a,b)R(c,d) \iff a+d =b+c$ show that $R$ is an equivalence relation.

2 votes
Accepted

Normal subgroup of a group

2 votes

Simplifying a function using POS and boolean algaebra

2 votes

Find $\lim_{x\to0}\frac{\sin5x}{\sin4x}$ using $\lim_{\theta\to0}\frac{\sin\theta}{\theta}=1$.

2 votes
Accepted

Understanding Inequalities.

2 votes
Accepted

What are the concepts that I need to understand before studying Fourier Analysis?

2 votes

Continuous function vs Uniformly continuous function

2 votes

Taking Calculus in a few days and I still don't know how to factorize quadratics

2 votes
Accepted

Finding partial derivatives from a given function

2 votes

The Integral with Inverse Tan

2 votes
Accepted

Let $z = x^a y^b \ln(xy)$. Find $x \frac {dz} {dx} - y \frac {dz} {dy}$ in terms of $z$

2 votes

Help in solving $y' - \frac{y}{t} = b$

2 votes

How can I prove every Riemann sum of x^2 of [a,b] is the integral?

2 votes

Proving a set is closed in the space of continuous functions

2 votes

Subspace topology in $R$

2 votes

Integration by parts and dv being an unknown function

2 votes
Accepted

Pointwise convergence of sequence of continuous functions

2 votes

Should I be concerned if I cannot solve most exercises in my textbook?

2 votes

How to find derivatives in the following table?

2 votes
Accepted

Finding the integrating factor

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