# Find the tangent.

• Mar 29th 2006, 12:22 AM
classicstrings
Find the tangent.
How would i find the tangent to the quadratic 2x^2 -12x + 14 at the point (1,4)? Do we take the derivative of the equation? Thanks
• Mar 29th 2006, 03:05 AM
$f(x) = 2x^2-12x+14$
when $x = 1$
$f(x) = 2-12+14 = 4$
$f'(x) = 4x-12$
$f'(1) = 4-12 = -8$