# Thread: Projection of line on plane

1. ## Projection of line on plane

I have posted same thread twice due to internet connection problems. I'm so sorry. The original thread is this: http://www.mathhelpforum.com/math-he...ne-182203.html You can delete this thread.

2. Originally Posted by patzer
Given $f(x,y)=\begin{cases}0 &\text{for~}x\leq 0\,,\\ \sin x+\phi &\text{for~}x > 0\,. \end{cases}$
Use tex /tex tags instead of math tags