Use the definition of the limit to find the derivative of the function
f(x) = 7x + 3
f(x) = sqrt(x) + 2; (9,5)
use the derivative to find the equation of the tangent line to the graph of f at the indicated point.
f(x) = x^2 + 3/x; (1,4)
The definition of a limit is used to find a derivative. Tangent equations are investigated.