As mentioned above, funds have time value, even if the amount is the same, because their value is different at different times. On the contrary, absolutely unequal funds may be of equal value at different time points under the action of time value.

These funds with different maturities and different amounts but "equivalent" are called equivalence, also called equivalence. Capital equivalence and compound interest are calculated in the same form.

Many equivalent formulas are verified by truth table method, and some of them are very important and are an important part of Boolean algebra. The important equivalent formula is one of the keys to learn mathematical logic well.

Advantages of learning mathematics

People who are good at math are relatively smart and savvy, and they can show their advantages in dealing with people. The faster you think, the more ways and ideas you have. Mathematics is the foundation of other disciplines, and it is easier for people who learn mathematics well to get into other disciplines. Learning software, computer, finance and other engineering majors is even more handy.

It is used everywhere in life. Nowadays, the society is an information society, and mathematical knowledge is used in financial management and computers. Mathematics can cultivate people's integrity and honesty. Mathematics pays the most attention to convincing people by reasoning, and only believes in the results of logical reasoning. Mathematics can cultivate people's tenacity and courage. Mathematics can cultivate people's overall consciousness. Mathematics can cultivate people's good character.