Orbits Question Time

they probably have domesticated animals of some description yes. aw poor you! :(

england is great. it would be better if it was less rainy.
 
haha. you think kissing is rushing? we've been together 6 months.
 
long nosed? im fairly well known within liverpool. i organise a lot of events.
 
$$\frac{d^{2}y}{dx^{2}} + 4\frac{dy}{dx} + 4y = x^{2}-2$$ with $$y(0) = -1$$ and $$y'(2) = 3$$

What is y(x)?
 
Orbit said:
oh i added myself to the map thing.
Click to expand...

Ok, cool. I had also added myself there.

- Do you watch football?
- Do you support liverpool?


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About the Member Round 1: Enmos
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AlphaNumeric said:
$$\frac{d^{2}y}{dx^{2}} + 4\frac{dy}{dx} + 4y = x^{2}-2$$ with $$y(0) = -1$$ and $$y'(2) = 3$$

What is y(x)?
Click to expand...

Orbit said:
0... i think. maybe?
Click to expand...

I don't remember whether I got calculus in high school or in the first year of Uni.
Do you get basic calculus at school? I'll give you some clue to the answer later
if you are interested. But first of all, let me make sure this: do you understand
the question?

bye for now
 
Last edited:
no i dont watch much football, or support liverpool. Im more of a rugby and athletics girls.

regarding the maths, let me check that i think i understand.
dy/dx is the differential yes? and d2y/dx2 is the second differential right?
y'(2) is the differential of y multiplied by 2? and y(0) is just y?

im not great at maths, we do basic calculus, but not these kinds of equations. im gonna have another go at it in a bit, but just tell me is what i think is true. unless ive got it completely wrong.
 
y(x) im guessing is another way of asking what is f(x)? so what is the function in terms of x... so what is y in terms of x?
 
Orbit said:
no i dont watch much football, or support liverpool. Im more of a rugby and athletics girls.

regarding the maths, let me check that i think i understand.
dy/dx is the differential yes? and d2y/dx2 is the second differential right?
Click to expand...

Yes. :)


y'(2) is the differential of y multiplied by 2? and y(0) is just y?
Click to expand...


Are you actually Reiku? (j/k, no offense, Reiku :p). In algebraic problem,
the bracket indicates multiplying function, but in calculus, no.

y'(2) means the value of y' when x = 2.

The problem can be easily solved by using Laplace transforms. Have you learn
already about Laplace transforms at school? :confused:


im not great at maths, we do basic calculus, but not these kinds of equations. im gonna have another go at it in a bit, but just tell me is what i think is true. unless ive got it completely wrong.
Click to expand...

Math is not difficult, as long as you understand all the definitions. Nevertheless,
I also know just very little basic definitions ;)
 
haha. ok. sorry i havent dont ANY maths in... erm 6 weeks now. so im a bit rusty on the calculus. we dont learn the laplace thingy here. no. what is it?
 
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