Newbetuts
.
New posts in algebra-precalculus
Distributive property of division over addition and logic
algebra-precalculus
first-order-logic
quantifiers
Writing a function $f$ when $x$ and $f(x)$ are known
algebra-precalculus
functions
Number of real positive roots of a polynomial?
algebra-precalculus
polynomials
roots
Finding the "triangular root" of a number. [duplicate]
algebra-precalculus
Find all integers $a$ for which $x^2-x+a$ divide $x^{13}+x+90$.
algebra-precalculus
Calculate simple expression: $\sqrt[3]{2 + \sqrt{5}} + \sqrt[3]{2 - \sqrt{5}}$ [duplicate]
algebra-precalculus
arithmetic
radicals
Find the value of $\sum_{n=1}^{\infty} \frac{2}{n}-\frac{4}{2n+1}$
sequences-and-series
algebra-precalculus
summation-method
When does the equality hold in the triangle inequality? [duplicate]
algebra-precalculus
inequality
absolute-value
In percent change, why do we divide the difference by the original number?
algebra-precalculus
Minimise $|z_az_b + z_cz_d|$ where $\{z\}$ are the roots of $x^4 + 14x^3 + 52x^2 + 56x + 16$
algebra-precalculus
polynomials
contest-math
Evaluation of $\int\frac{\sqrt{\cos 2x}}{\sin x}\,dx$
calculus
integration
algebra-precalculus
indefinite-integrals
trigonometric-integrals
How to find vector from point along line lying on a direction vector?
algebra-precalculus
vectors
3d
Prove that all for all positive integers $m,n $: $\frac{1}{\sqrt[n]{m}}+\frac{1}{\sqrt[m]{n}}>1$
algebra-precalculus
inequality
radicals
If 5 points are necessary to determine a conic, why are only 3 necessary to determine a parabola?
algebra-precalculus
geometry
conic-sections
Probability of college acceptance
probability
algebra-precalculus
computing $A_2=\sum_{k=1}^{n}\frac{1}{(z_k-1)^2} $ and $\sum_{k=1}^n \cot^2\left( \frac{k\pi}{n+1}\right)$
complex-analysis
algebra-precalculus
complex-numbers
summation
roots
Solve $(\sqrt{5+2\sqrt{6}})^{x}+(\sqrt{5-2\sqrt{6}})^{x}=10$.
algebra-precalculus
Why does $\sqrt{x^2}$ seem to equal $x$ and not $|x|$ when you multiply the exponents?
algebra-precalculus
absolute-value
Find area of shaded region - is the information insufficient?
algebra-precalculus
geometry
area
Solve the equation $\sqrt{x+3}+\sqrt{x^2+2x+7}-\sqrt{x^2+3}=(x+1)^2$ [closed]
algebra-precalculus
systems-of-equations
real-numbers
radicals
Prev
Next