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beaver, you still looking for students to tutor? i still need english.

hey guys, thanks for reading, just couldnt figure these questions out: If a and b are the roots of the equation px^2 + qx + r = 0 find, in terms of p,q and r a)1/a^2 + 1/b^2 b) a^b+ab^2 When it says in terms of p,q and r, does every equation have to have all three terms? Cheers

I just started this topic by myself, not coping very well, just need a few tips on how to solve the following questions (working out would be awesome :D): a) A piece of wire 6 metres longis cut into 2 parts, one of which is used to form a square, and the other to form a rectangle whose length...

I'm having a little trouble with this equation, cant move the numbers around very well. If cos u=2/3 and u is not in the first quadrant, find in simplest surd form, the value of cos u - 2 cot 2/ tan u - 3 sin u Greatly appreciated if working out could be shown as well, cheers

Thanks Timothy.Siu, i worked out the question nearly instantly after i saw that circle, but i hit another brick wall with this topic, the question is: Find the equation of the locus of the midpoints of all chords of length 4 of the curcle with equation x^2+y^2-4x+2y=4. I worked this question...

yeah. er..not sure what the diagram even looks like, just started this topic, and as you can see, its not my strongest point, really appreciate if someone could give a pointer on this one

thanks trebla for that, now i get it :D but i got stuck on another question: "A" is a point where the circle with equation x^2+y^2=16 cuts the X-axis. Find the locus of the midpoints of all chords of this circle that contain the point A. I'm not sure where to start, and a diagram would be...

Hey guys, just doing a little extra here and im pretty stuck on this: 11 (a) Find the equation of a circle whose centre is the point (-1,2) and whose radius has a length of 5 units. I could work this question out which turned to be: x^2+y^2+2x-4y-20=0 But part b had me stumped: b) What is the...

er. yeah I checked these answers to the answers provided and they matched, I just wasnt sure how to work them out. I only just realised that the perpendicular point formula could be applied to the first question and the second question was pretty straighforward once I realised how to start it...

Ok, I have no idea how to do the following questions First, fine the equation of the locus of a point P(x,y) that is subject to the following conditions: 1.)A point is √2 units from the line equation y=x. The answer is y=x plus or minus 2. However, I have no idea how that is right. 2.) A and...