# Math Help - Notation question

1. ## Notation question

When I'm doing problems where I'm finding a tangent line, I find it cumbersome to write out the part where I'm expressing the slop of the line at x=(some value). Is there a notation for expressing the slope of the tangent line to a function at a specific x value?

2. ## Re: Notation question

Originally Posted by beebe
When I'm doing problems where I'm finding a tangent line, I find it cumbersome to write out the part where I'm expressing the slop of the line at x=(some value). Is there a notation for expressing the slope of the tangent line to a function at a specific x value?
if the function is $f(x)$, then the slope at $x = c$ would be $f'(c)$