Newton-Leibniz formula
"The cost of life" is a metaphor, which means that something needs to pay a great price, even life. Newton-Leibniz formula is a formula in calculus, which is used to calculate the value of definite integral. This formula was independently discovered by British mathematician Newton and German mathematician Leibniz. It has made great contributions to the development of calculus and is called the cornerstone of calculus.
calculus
This riddle conveys the importance of learning mathematics by linking "the cost of life" with "Newton-Leibniz formula". Mathematics is a subject that needs patience, persistence and dedication, but it can also bring infinite fun and gain. Therefore, the answer to the riddle "Newton-Leibniz formula" is not only a mathematical term, but also an encouragement and affirmation for learning mathematics.