Learning a new input method is difficult.

We have developed a new methodology to solve this problem.

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

The use of mobile phones is prohibited during class.

I studied calculus at university.

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.

Discrete mathematics is an important field that forms the basis of computer science.

He is majoring in applied mathematics at university.

He is passionate about researching pure mathematics.