It has no relation to differential calculus, calculus relates to continuous change. Pythagoras could've worked this out about 2000 years prior to the discovery of calculus. You're not finding the gradient of an effectively infinitesimal point on an ever-changing curve.
It has no relation to differential calculus, calculus relates to continuous change. Pythagoras could've worked this out about 2000 years prior to the discovery of calculus. You're not finding the gradient of an effectively infinitesimal point on an ever-changing curve.
Apologies, my math is dreadful.