Math Is Fun Forum

hi ganesh

15041

how do you find the eqation for all the numbers?

hi again

hi to both of you

I don't think that a and b habe to be pergect squares.For example the geometric mean of 21 and 1701 is 189 and it's integer.

hi silverpuma

labeling lines and angles usually doesn't require anything strict.It only matters in similarity,homothety,isometric transgormations and such,because you have to know which point is a picture of which,and also if Δ ABC~ Δ CDE then it is usually understood that  Δ ABC is not similar to Δ CED or DCE or DEC or ECD or EDC.

Also for labeling geometric shapes every two adjacent letters are the name of an edge of that shape.So if you have a rectangle ABCD it's the same as having ADCB or BCDA or BADC and so on...

hope this helps.

it says here that it should be solved using Stolz theorem but i don't know how.

hi ganesh

hi soroban
you tell him.
the person who posted "what rubbish is this??" 'clearly' doesn't know the rules for trigonometric functions of sums.

hi zee-f

As for 19. sometimes it's easier to use these methods instead of graphing.
If in an equation you had 5/7x+3/11, then it would certainly be easier to use one of these to methods.
Just so you know the elimination method is a form of the Gaussian method which can be used not only for systems of two but also three and more equations.

hi ganesh