Science & Mathematics - 22 December 2006

i got the value of
when i = 1 exp(3.1416) = 23.1407
when i = 3 exp(3.1416 * 3) = 1.2392e+004
when i = 45 exp(3.1416 * 45) = 2.4942e+061
and then how is e^( i *pi) = -1
what is the value of i in ths function?

2006-12-22 01:44:27 · 10 answers · asked by Sathish 1 in Mathematics

The molar mass of Fe2(SO4)3 is 399.91 g/mol

2006-12-22 01:44:06 · 2 answers · asked by sydney 2 in Chemistry

Its better to get there in one piece.

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I would like to find some free sites for downloading of books for management, quality, standards environment etc

2006-12-22 01:34:46 · 5 answers · asked by aleksandramalvern 2 in Engineering

My company is having a series of holiday raffles. Employees earn entries by completing specified tasks, so any employee may have one or more entries within a given week. We do not know how many entries there are in total, but we can see how many entries any given employee has submitted in each time period.

After two weeks, three employees have won twice. Some people (meaning "those of us who haven't won") are curious about the probability that this could happen.

If we assume that there are 2000 total entries and 1000 employees have entered in each of the raffles and there are 10 prizes in each raffle, how do we calculate the probabilty that

1 person wins twice
2 people win twice
3 people win twice

Thanks in advance...

2006-12-22 01:31:04 · 2 answers · asked by naxetton 1 in Mathematics

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THEY SAY NO SPOON IN THE MICROWAVE WHY! AND WHAT CAUSES THE THING TO HAPPEN

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Please show me complete working!!!!!!!!!!!!!!!!!!! GOOD LUCK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2006-12-22 00:58:22 · 5 answers · asked by Tuhak 1 in Mathematics

Evaluate: 2a^2 - 4a for a = -2

Simplify: -11a - 14b + 6a - 7b

Simplify: 4c - 3c^2 - (4c + 2c^2)

2006-12-22 00:51:10 · 9 answers · asked by RJS88 1 in Mathematics

When it comes to your view of extraterrestrial intelligence? Why?

2006-12-22 00:50:08 · 7 answers · asked by Anonymous in Astronomy & Space

why clocks go back and forward in winters and summers respectively?

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it is the term used in the agricultural & biotechnology
i think it deals with the processing of seeds to manage the drought
conditions

2006-12-22 00:39:50 · 2 answers · asked by deepak 2 in Botany

I am inerested in knowing if the fish can seperate oxygen from water while it breaths, can the breathing of a fish be simulated to seperate oxygen and hydrogen from water?

2006-12-22 00:34:47 · 10 answers · asked by dididi d 1 in Zoology

i am using matlab program to plot the equ e^(ix) = cos x + i sin x ?
but the left side graph is not eqval to right side.

function esinx()
x = 0;
for i = 1:1000
e(i) = exp(x);
sinw(i) = sin(x);
esin(i) = exp(x) * sin(x);
x = x + 0.01;
end
subplot(3,1,1); plot(e);
subplot(3,1,2); plot(sinw);
subplot(3,1,3); plot(esin);
%end

2006-12-22 00:33:57 · 5 answers · asked by Sathish 1 in Mathematics

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