equation of tangent

Summary

the equation of a tangent at a point on a curve can be found by differentiating, finding the gradient and then substituting into the equation of a straight line.

y − y1 = m(x − x1)

Key Skills

  • calculate the gradient at a point on a curve
  • find the equation of a tangent at a point on a curve

Vocabulary

gradient, gradient functionderived functiondifferentiationnormal,perpendicular.