Expressing a doubt or choice between alternatives,
Expressing a doubt or choice between alternatives
he seemed undecided whether to go or stay
it is still not clear whether or not he realizes
Expressing an inquiry or investigation (often used in indirect questions)
I'll see whether she's at home
Indicating that a statement applies whichever of the alternatives mentioned is the case
I'm going whether you like it or not
Which of two. [11th-19th c.]; Introducing a direct interrogative question (often with correlative or) which indicates doubt between alternatives; Used to introduce an indirect interrogative question that consists of multiple alternative possibilities (usually with correlative or); Without a ...
means "if" and is used only inside sentences: I don't know whether to bring an umbrella or not.
to use mathematics in a particular situation
means if it is so, not because of or anything having to do with the weather. [So, you might like the weather, whether it snows or rains.]