Equations and uses

precise

induce

arrive

certificate

Something. The same. solve

Equation, the format is not very important, as long as you can express yourself. precise

When importing, format is very important. If the basic format is right, the topic is right.

I don't know much about it myself Take it as a reference. You'd better buy a foreign textbook.

Prove:

certificate

because ......

,

......

Therefore, therefore. . . We can know. . . .

namely

namely

"Because, so" can be replaced by mathematical symbols.

When (x=? )

,

......(y=？ )

while

(x=？ ),

(y=？ )