Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 Help Me ! » Differential Equations » 2008-09-15 07:48:47
- tulip007
- Replies: 1
x' = tx^2 x(1) = 1
I have missed the lecture to explain this and the lecturer is not available to explain this to me, so any help would be greatly appreciated.
#2 Help Me ! » Riemann integration » 2008-09-13 09:27:57
- tulip007
- Replies: 1
Define q(x) = 1 if x ε Q and g(x) = 0 otherwise. Prove that q is not Riemann integrable on {0,1) by showing that for all partitions P
U (q, P) L(q,P) > 1
I am really lost on this question, any help would be greatly appreciated!
#3 Help Me ! » Integration by partial fractions » 2008-08-06 16:26:34
- tulip007
- Replies: 1
I am not sure how to put this equation into partial fractions. Any help would be appreciated.
10x + 1/(x(x + 1)(x + 2)).
#4 Help Me ! » velocity and acceleration » 2008-07-17 09:44:58
- tulip007
- Replies: 3
A particle P moves a long a straight line so that its distance x from the origin is given by the formula
x = 2t^3 - 9t/62 + 12t'
Find the velocity v and acceleration a of P at anty time t. Show that v = 0 when t = 1 and t =2.
#5 Help Me ! » Quadratic taylor series » 2008-05-17 16:29:36
- tulip007
- Replies: 1
I have to write the quadratic taylor series for the expression e^(-x^2). This topic was skimmed over during the lectures and now I have no idea what I am doing. Any help would be greatly appreciated!!
#6 Help Me ! » elliples and double integrals » 2008-05-13 17:39:40
- tulip007
- Replies: 1
Express the area A defined by the upper quadrant of the ellipse x^2/a^2 + y^2/b^2 = 1
as a double integral in the x,y plane. Hence show that A = πab/4
#7 Help Me ! » Green's theorem » 2008-05-12 19:56:53
- tulip007
- Replies: 1
Use Greens theorem in the plane to evaluate the work inegral:
W = ∫ F. dr = ∫ (3x - y) dx + (x + 2y) dy
where C is the boundary of the ellipse x^2 + 4y^2 = 9
#8 Help Me ! » polar coordinates and centre of mass » 2008-05-08 17:59:31
- tulip007
- Replies: 1
Use polar coordinates in the plane to show that the area of a disc of radius a is ∏a^2.
Using this result, determine the volume of a cone of height h and radius a. Find the position of its centre of mass.
#9 Help Me ! » Double integrals » 2008-05-06 17:43:56
- tulip007
- Replies: 1
Express the area A defined by the upper quadrant of the ellipse
x^2/ a^2 + y^2/ b^2 = 1
as a double integral in the x, y plane. Hence show that A = ∏ab/4
#10 Help Me ! » Partial derivatives are giving me nightmares! » 2008-04-30 15:24:59
- tulip007
- Replies: 1
I have a question about using the quotient rule to parial differentiate. I seem to be confusing myself on how to get the answer and I can't get it. Normally quotient rule is really easy for me, now I am going nuts. If anyone could please show me how to work out this example so I can use the technique to work out other problems I would greatly appreciate it!
f(x,y) = (x + y)/(xy - 1)
Pages: 1