BR Pahari's user avatar
BR Pahari's user avatar
BR Pahari's user avatar
BR Pahari
  • Member for 8 years, 5 months
  • Last seen this week
6 votes

Question about the chain rule.

5 votes
Accepted

Simplifying function $f(x)=\frac{2x+1}{x+3}$

5 votes
Accepted

Why can't I do this substitution?

4 votes
Accepted

A function $f$ such that $\lim_{x\to b}f(x)=+\infty$ and $\lim_{x\to b}f'(x)=-\infty$

4 votes
Accepted

Double angle formulae for $\sin2\theta$ and $\cos2\theta$ in tangent form?

4 votes
Accepted

Finding the derivative of $y=\sin(\cos^{-1}(2x))$

3 votes
Accepted

Linear algebra square root operator example

3 votes

Is this true? $\sum_{n=0}^\infty\left(-1\right)^n=\sum_{n=0}^\infty\left(-1\right)+\sum_{n=0}^\infty\left(1\right)$

3 votes

How do I prove that this function is monotone?

3 votes
Accepted

Prove that $\sqrt{101}$ lies between $10$ and $10.05$ by Mean Value Theorem.

3 votes
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Using differentiation to find a power series representation.

3 votes
Accepted

Source for problems to practice applying Zorn's lemma.

3 votes
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Sequence defined as sum.

3 votes
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If series of terms $a_j, b_j$ are convergent, must $\sum_j^\infty a_j b_j$ be convergent?

3 votes
Accepted

If f is increasing, then show that g is also increasing

2 votes

Limit "Replace $1$ by $0$"

2 votes

Why is there no derivative in an absolute value function?

2 votes
Accepted

Is $\cot x = \tan (π/2 - x) $ true for any angle $x$?

2 votes

non-null vector space & basis

2 votes

Null space of a matrix A..

2 votes
Accepted

Is the set of continuous functions in the subspace of differentiable functions?

2 votes

What's the coolest way to prove that $p^k - 1 \equiv 0 \mod 3$ where p is a prime not equal to 3, and k is an even positive integer?

2 votes

How different are these function from calculus point of view, f(x)=(x^2-4)/(x-2) and g(x)=(x+2)?

2 votes

how to find limits of integration in terms of r when a paraboloid intersects a plane

2 votes
Accepted

What is the term for equation in $y=f(x,y)$

2 votes
Accepted

If $p^n$ divides $q^n$ does $p$ divide $q$?

2 votes
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Prove that if $f$ and $m$ are polynomials over $K$, and $m$ is irreducible, then hcf$(f,m)$ is either $1$ or $m$.

2 votes
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Intersection of Family of Uncountably many Countable sets countable.

2 votes

The reversibility of the adjoint operator

2 votes
Accepted

Integrate $\int_0^\infty\frac{1}{x}\ln\left(\left(\frac{1+x}{1-x}\right)^2\right)dx$ using known sum