Using differential calculus we can obtain conditions on x under which this holds.
Another approach for a coordinate triangle is to use Infinitesimal calculus to find the area.
In particular it is possible to use calculus on a differentiable manifold.
He used calculus to find his results for a uniform spheroid.
Starting from knowing how an object is accelerating, we use calculus to derive its path.
For more general demand and supply functions, these areas are not triangles but can still be found using integral calculus.
There are no known ways to solve a problem using calculus.
There is a way to solve a problem using calculus.
The study of geometry using calculus, and is very closely related to differential topology.
This can be proved in another way using calculus.