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excuse me bobbym but in post #5 you divided the whole equation by 3. so 3/3 is not 3 but 1.
also zee-f try using latex.saved me a lot of time and trouble.
hi ganesh
hi ganesh
hi bobbym how did you get your answer?
hi gAr
thank you
if you could just clearify how you got to the first equation?
hi Au101
i did it with the hep of the roots of unity.then i took a symetric picture of the circle with the centre being the vertical line that goes through the point (1/2,0) and showed that it's the circle that we need.
yes.an acute triangle.
hi Au101
for (a) probably a typing error
as for c i think that the centre is in (-1,0) and the radius is 1.
Prove this:
hi ganesh
hi ganesh
hi ganesh
hi
i edited my answer
hi ganesh
hi bobbym
how did you get that?
hi ganesh
hi ganesh
hi gAr
doesn't matter
i need help with one more problem:
Find x.
hi ganesh
hi NaizeNagDiday
welcome to the forum
just so you now introductions have their own thread
hi ganesh
hi ganesh
hi gAr
yeah thanks for help.your solution is much more understandable than theirs.
hi to both of you
i just gave a counterexample to show that the numbers don't have to be squares just because their geometric mean is integer.
just wondering how can you prove that the maximum of a function is the zero of its derivative.