We have developed a new methodology to solve this problem.

Learning a new input method is difficult.

The use of mobile phones is prohibited during class.

There is a class observation at my son's school tomorrow.

The calculation of an indefinite integral can be considered as the reverse operation of differentiation.

In order to calculate the integral constant, it is necessary to solve the differential equation.

I studied calculus at university.

He is passionate about researching pure mathematics.

He is majoring in applied mathematics at university.

He is a world-famous mathematician.