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Greetings, are there any tricks to determine how to factor non-monic quadratic equations? for example, what would be the common thought process to factor something like y = 6x^2-5x+1 Thanks in advance

thanks, and also, to find the y-coordinate, sub into f(x) or f'(x)?

If I find the second derivative for a function, and end up with something like y'' = 6x -7 How can I find out the points of inflexion? Also, how can I determine whether they are concave up or down? For finding the points, I am assuming y'' = 0 and solve for x and from there, depending on...

Hmm am I missing something? If you do the rise / run = 2/0 = undefined

If I have the origin, (0,0) and a random point along the y-axis, for example A (0,2) and am given point, for example P (-3,-1) how can I make an equation for line PB if B is perpendicular to OA? In simpler terms, I want to find the perpendicular gradient of OA

For the main differentiation rules (product, quotient etc) are you expected to expand and simplify to its smallest form? Just finished the product rule exercises and that was the most tedious thing i've ever done..

Just to clear up any slight confusion.. for a question such as .. 10) By calculating the interior angles, show that triangle ABC with vertices A(7,1), B(-1,-1) and C(5,-7) is an isosceles triangle. So I calculated the gradients however made the decision to disclude the absolute value in...

MX1 gave me a wake up call as it was really intense for me in the first couple months. You will get used to it and 2U becomes an absolute breeze

Thanks for the insight. I did very well in my 3u test a couple months ago, however I feel that they made it too easy. Is there any way you could compare your capabilities with the 4u course?

I am seriously considering doing ext 2 math next year.. I am aware that it is a big jump from ext 1, but would anyone like to share their experiences doing it? what was the hardest aspect of doing the subject? was it enjoyable? thanks!:smile:

I got confused with that too. Didn't know whether you were to assume it was perpendicular, or to change the points to a perpendicular line o.o

Sorry about that, 16 was the number of the question. I copied it right out of MIF

Remember the equations by writing it on every question you do. Quickly go over them before you go to bed.

16) A(0,6), B(2,0) and C(-2,0) ... b) Show that the perpendicular OA, where O is the origin, bisects BC Not really sure how to approach this one

Aim for a good 2u mark, there is still plenty of time to improve and refine your skills

yes, this makes more sense but apparently i got the same answer using my initial method

How do you find the exact value of tan285 ? Is it something along lines of tan180 + tan(60+45)? Can you even do this? o.o

Any tips to prevent back pains? I'm trying to grind math textbook exercises but sometimes by back hurts from even 10 minutes of sitting down.

ahh, i guess that would be convenient instead of f(-b/2a). Thanks

Greetings, By completing the square, what have i accomplished? It seems that completing the square only adds more steps to the problem For example, an equation like y=x^2-2x, the x and y intercepts can be found instantly However, when a question asks to complete the square, then sketch the...