performance test 2

Julien Founder

53137POSTS

13 years ago

Hi,

this is a simple test - sorry for the inconvenience

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Fred Indonesia Expert

30549POSTS

13 years ago

That's OK.
This is a harder test.

Consider the complex exponential e^j*theta. Using Euler's identity we may expand this term as e^j*theta=cos(theta)+jsin(theta)
This result indicates that we may express the continuous time sinusoidal signal x(t)=Acos(wt+f) as the real part of the complex exponential signal Be^jwt (w is the angle like theta) where B itself a complex quantity defined by B=Ae^i*f (f another angle)
that is we may write
Acos(wt+f)=Re{Be^jwt}

What colour is it?

Primadonna Jordan Expert

5334POSTS

13 years ago

pink?

HaileyinHongKong ViP

4723POSTS

13 years ago

A train from New York travels west at 75mph. 30 minutes later a train from Los Angeles goes east at 90mph. The train from New York makes a 2 hour stop in St Louis. The train from Los Angeles makes a 45 minute stop in Albuquerque. Both trains are due to arrive in Dallas. What is the New York train driver's name?

Fred Indonesia Expert

30549POSTS

13 years ago

HaileyinHongKong wrote:
A train from New York travels west at 75mph. 30 minutes later a train from Los Angeles goes east at 90mph. The train from New York makes a 2 hour stop in St Louis. The train from Los Angeles makes a 45 minute stop in Albuquerque. Both trains are due to arrive in Dallas. What is the New York train driver's name?

It was a runaway so there was no driver.

jazzy851 ViP

1487POSTS

13 years ago

What is the New York train driver's name?

Speedy Gonzales?

kiwiinkorea Serial expat

385POSTS

13 years ago

Too hard this early in the morning, still working my first coffee

Fred Indonesia Expert

30549POSTS

13 years ago

I'll bet poor old Julien has a headache by now.

James ViP

11272POSTS

13 years ago

HaileyinHongKong wrote:
A train from New York travels west at 75mph. 30 minutes later a train from Los Angeles goes east at 90mph. The train from New York makes a 2 hour stop in St Louis. The train from Los Angeles makes a 45 minute stop in Albuquerque. Both trains are due to arrive in Dallas. What is the New York train driver's name?

His name is Buck. Every engineer has the name Buck in all the films I've seen.

Fred Indonesia Expert

30549POSTS

13 years ago

#10

wjwoodward wrote:
HaileyinHongKong wrote:
A train from New York travels west at 75mph. 30 minutes later a train from Los Angeles goes east at 90mph. The train from New York makes a 2 hour stop in St Louis. The train from Los Angeles makes a 45 minute stop in Albuquerque. Both trains are due to arrive in Dallas. What is the New York train driver's name?

His name is Buck. Every engineer has the name Buck in all the films I've seen.

Ner.
It was Casey Jones.