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When to use equal to or equivalent to? 
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#1
Dec413, 09:40 AM

P: 207

When is it appropriate to use [itex]\equiv[/itex] as opposed to =?



#2
Dec413, 09:58 AM

PF Gold
P: 6,135

well, here are a couple of examples, although I don't know that it would ever be wrong to use = when you mean equivalent.
y = ax + b [this is an "assignment" which is typical for "="] a + b == b + a [this is not an assignment but a statement of equivalence] 


#3
Dec413, 09:58 AM

Mentor
P: 21,214

Use = for equations that are conditionally true, such as 2x + 1 = 5. This equation is true only for x = 2; i.e., only under certain conditions. 


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