lyj

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52 Answers

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13
Show that $x^{8}+5x^{2}=1$ has exactly $2$ real roots
5
How many zeros are there at $1000!$ in the base $24$
5
Show that $\sum_{k=1}^n a_k=3/4$.
5
Derivative of $\sqrt{\sin x^2}$
4
Prove $2\lfloor x\rfloor \le \lfloor2x\rfloor$
4
proving that if $a*c=b*c$ then $a=b$.
4
What is the meaning of exponentials to real powers for which series don't exist?
3
How do evaluate an inequality that involves a fractional part?
3
A multiple choice question on determinant
3
Solving the following equation: $2^{x}+\log_{10}x-2=0$
3
True/false question: limit of absolute function
3
Is this analysis problem or discrete math problem?
3
Is there way to figure out the linear transformation by 3 given images?
3
Real Analysis Supremum Question
2
Find angle in secant/chord diagram
2
Iteration convergence.
2
if $g(x)=\int_3^{x^4}t\sqrt{2+t}dt$ then what is $g'(x)$?
2
Problem with congruence relations
2
Does the sequence $(1,\frac{1}{2},\frac{1}{2^2},\frac{1}{3},\frac{1}{3^2},\frac{1}{3^3},\ldots)$ converge?
2
Another series convergence question
2
Show that the Riemann-Stieltjes integral exists
1
How to prove $(\frac{n+1}{e})^n<n!<e(\frac{n+1}{e})^{n+1}$ without integrating method?
1
Lebesgue integrable function and square-integrable functions?
1
Induction proof: $\dbinom{2n}{n}=\dfrac{(2n)!}{n!n!}$ is an integer.
1
Problem related with the zeroes of a polynomial
1
What is $\sum_{j=0}^{\infty}\frac{j+1}{2^j}$?
1
Absolute value inequality - Please guide further
1
Proving inequality with metrics
1
Differentiability vs Having a Derivative
1
How to find critical points of an absolute values function
1 2