0
votes
0answers
17 views

How to properly clamp Beckmann Distribution

I am trying to implement the Cook-Torrance Microfacet BRDF shading model and I am having some trouble with the Beckmann Distribution: Beckmann Distribution with width parameter ...
0
votes
1answer
121 views

Normalize infinite range into finite one

First of all; I'm a programmer, not a mathematician so please excuse the informality of my math-vocabulary. I have a series of slopes, calculated out of random angles (their tangents). These angles ...
7
votes
3answers
4k views

Is $\tan(\pi/2)$ undefined or infinity?

The way I have understood, $0/0$ is undefined or indeterminate because, if $c=0/0$ then $c\cdot 0=0$, where $c$ can be any finite number including $0$ itself. If we also observe a fraction $F=a/b$ ...
1
vote
4answers
176 views

why $\lim_{x\to-\infty}(\sin x+2)\ln(-x)=\infty$?

Why does $\lim_{x\to-\infty}(\sin x+2)\ln(-x)$ equal $\infty$? Breaking up the limit: $\lim_{x\to-\infty}(\sin x+2)$ DNE because it oscillates between 1 and 3 $\lim_{x\to-\infty}\ln(-x) = \infty$ ...
2
votes
4answers
764 views

What is the limit as $x\to\infty$ of $\cos x$?

What is the limit as $x\to\infty$ of $\cos x$? Thanks in advance.