Equation和Formula的区别_芝士就是力量

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Equation和Formula的区别

(2019-08-01 09:48:25)

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分类：英语学习

What is an Equation?

An equation says that two things are equal. It will have an equals sign "=" like this:

That equations says: what is on the left (x + 2) is equal to what is on the right (6)

So an equation is like a statement "this equals that"

(Note: this equation has the solution x=4, read how to solve equations.

What is a Formula?

A formula is a fact or rule that uses mathematical symbols.

It will usually have:

an equals sign (=)
two or more variables (x, y, etc) that stand in for values we don't know yet

It shows us how things are related to each other.

These are all equations, but only some are formulas:

x = 2y - 7	Formula (relating x and y)
a² + b² = c²	Formula (relating a, b and c)
x/2 + 7 = 0	Not a Formula (just an equation)

Sometimes a formula is written without the "=":

lwh

But in a way the "=" is still there, because we can write V = lwh if we want to.

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