Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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e^(i*pi)=cos(pi)+i sin(pi)....

why didn't i think of this before....

thank you bob....

how did someone end up with such an equality??

I mean i've tried it many times but i never got that equation right........

I could never compute e^i......

And can anyone put some sense into that equation....

e^(i*pi)+1=0.......

Does anyone know what is that supposed to mean........???

why would anyone use such constant upto 14 decimal places........??

And what is that series called....??

Hello Bob;

Guess that approximation can be done.......

Hello Bob;

'm good and how are you doing.....???

and those aren't two numbers in actual sense .........

because pi is a symbol that is used to represent a particular decimal,3.1415.........

Hello Bobbym;

almost the whole of the argument you were trying to prove that .999999...... isn't equal to unity

that is what i actually agreed on..........

Hello guys;

i totally agree with Bobbym...

since infinity is no real number and since its value is not known,arithmetic of infinity cannot be performed as we do in case of other numbers.....

And 0.9999999999999.....can never be equal to unity.....

limit of .999999..... could be 1

but saying that .99999999...itself is equal to 1 would be absurd since both of those numbers have their own existence which cannot be equated......

i arrived at the same answer even when i did i for the whole curve so,i just clarified .....

anyway thank you for your help BOB............:):D

sorry about that -ve sign question .............

now that i worked out i found it myself.........

finally we need the centroid of the whole of boomerang ..........

bout here centroid of only half of the boomerang is found ......

so how come.....??

i mean what happens to the -ve sign with the term (200^3)/3..........??

I could not understand how you obtained the moments for components CD and DB........

i know the method of moments........

but 'm asking why[and how ] is the integration done for the components present there.............???

That's not what i actually meant...........

but anyway can explain that post #24......

in what method is the centroid found there........

how is the required area obtained of that rectangle considered...........??

sorry for the last post ......

i worked out a bit on it and i figured the step myself so.....

yes i know that

but 'm referring to the part after substitution of x=200cos u....

hello bob;

I was actually wondering what happens to the square root in post #15...........?

hello bob;

its a quarter circle,yes......

but how is it a rectangle..........

hello bob;

can you please complete it.........

'm completely lost...........

Hello bob;

how'd u find the co-ordinates of the point "B".......

hello bob;

i've never seen that before....

can u be more precise...............

Hello bob;

sorry but 'm wondering how'd u get that equation for curve CA..........???:o

hi bob;

its okay if its its in regular text

later you can post in latex....