New posts in maxima-minima

Can we tell if a function has a max or min by looking along specific directions?

Minimise $f(x,y,z)=x^2+y^2+z^2$ subject to the condition $1/x+1/y+1/z=0$

Find the max and min values for $f(x,y)=y^2-x^2$ subject to $(1/4)x^2+y^2=1$ using the Lagrange Multiplier

Properties of the Minimum of Two Poisson Random Variables

Point intersecting two planes closest to origin

Lagrange - Minimising area under parabola, my answer is wrong

Given three real numbers $a,b,c$ so that $\{a,b,c\}\subset [1,2]$ . How to make $\sqrt[3]{\frac{a+b+c}{\max\{a,b,c\}}}\leq\frac{3}{2}$ a lot stronger?

Why is $(10/x)^x$ biggest when $10/x = e$?

Calculate the maximum value

Finding the minimum value of a function without using Calculus

Finding stable sets from a graph

Maximum and minimum value of $\int_0^1 f(x)dx $ given $|f'(x)|<2$

Does $-\min(a,b) = \max(-a,-b)$?

What is the maximum of $\sum_{k=1}^{\infty} (-1)^k(^kx)$?

Find the minimum of $\frac{\sin x}{\cos y}+\frac {\cos x}{\sin y}+\frac{\sin y}{\cos x}+\frac{\cos y}{\sin x}$

How to prove this inequality involving the minimum of two chosen numbers

$x^2+y^2=1$, find min/max of $(3x+2y)^2+(x+2y)^2$

Bordered Hessian matrix to find a minimum of the function

Find a point $X$, in the plane of regular pentagon $ABCDE$, that minimizes $\frac{XA+XB}{XC+XD+XE}$.

Continuity proof for compact domain