1)in mathematics a⁰ =1 , when a not equal to zero. My question is how ' a multiplies 0 times is equal 1"??????

2) vector a - vector a= null vector. What would be its direction?Is that a vector?

3) parameter of a circle is equals pi r ² . why we use pi instead of a constant number 22/7?????

Edited April 30, 201213 yr by hypervalent_iodine
Superfluous code removed

1)in mathematics a⁰ =1 , when a not equal to zero. My question is how ' a multiplies 0 times is equal 1"??????

2) vector a - vector a= null vector. What would be its direction?Is that a vector?

3) parameter of a circle is equals pi r ² . why we use pi instead of a constant number 22/7?????

 

1)the expression a⁰ =1 does not mean a multiply 0 times, but a divides itself one time. a⁰ = a / a = 1

Edited April 30, 201213 yr by hypervalent_iodine
fixed code in quote

This post should probably be moved into the mathematics section, unless there is a reason why it has been posted here?

 

1)in mathematics a⁰ =1 , when a not equal to zero. My question is how ' a multiplies 0 times is equal 1"??????

 

You can prove that the statement is correct using what you know about the rules of exponents. A quick "google" will give you proofs. See if you can follow one, if not ask further questions here.

 

2) vector a - vector a= null vector. What would be its direction?Is that a vector?

 

The direction is arbitrary. This courses no problems.

 

3) parameter of a circle is equals pi r ² . why we use pi instead of a constant number 22/7?????

 

[math]\pi[/math] has not be chosen by us, rather it is just the way things work out on the plane. The number 22/7 is a reasonable approximation to [math]\pi[/math] for may purposes, but cannot replace it fundamentally.

!

Moderator Note

Agreed. I actually didn't see which forum it had been posted in, so thank you for pointing that out.

Moved to mathematics.

1)in mathematics a⁰ =1 , when a not equal to zero. My question is how ' a multiplies 0 times is equal 1"??????

2) vector a - vector a= null vector. What would be its direction?Is that a vector?

3) parameter of a circle is equals pi r ² . why we use pi instead of a constant number 22/7?????

 

What do you mean by "parameter" in 3). The expression is for area.

 

pi is a constant number. 22/7 is a simple approximate value, but it is not exact.

Where is the "funny"? The title promised me some funny!

Too Bad...!

Where is the "funny"? The title promised me some funny!

 

Unfortunately PfA, in this case I believe that "funny" means "things I don't understand".

 

I too was disappointed.

Too Bad...!

You joined and made this your first post, and your username is "Erudite"? That's funny*.

 

Thanks! And welcome!

 

 

 

* Although it would have been funnier, given the section this is in, to have said, "2 Bad", or perhaps "2(Bad)".