18/2/2013
Revision:
A-Math Question types:
1.“Polynomial and identities”
2.“Factor and remainder theorm” and “Division of Polynomials”
3.Cubic equation and solving cubic equation.
4.Partial Fraction
5. Combinations of the topics.
E-math question types:
*refer to the post about the tested topics.
*Find the equation
- Quadratic
- 2 real and different roots
- x = -4 or x = 2
- (x=4)(x-2) = 0
- y = A(x+4)(x-2)
- in y-intercept = -3, x = 0
- -3 = A(0+4)(0-2)
- -3 = -8A
- A = 3/8
- Therefore, y = 3/8 (x+4)(x-2)
Drawing Graph
Given : Scale, Table
- Draw graph using pencil
- Label the graph
- Values in ink
- if exceeds the range given, (e.g. -3< x <6) marks will be penalized
- Plotting x ------ (2-3marks)
- if x = ____, find y / y = _____, find x ------- (2marks)
- Line of symmetry - (1mark), Equation of line of symmetry - (1mark)
- Tangent at x=1
y= x^2 +x -2
hence, solve x^2 +x = 7.
x^2 +x-2 = 5
y = 5
y = x^2 =x -2 ----- (1)
y=5 ------ (2)
x^2+x-2=5
x^2 +x = 7
YOU WILL LOVE IT OR YOU WILL LOVE IT TO HATE IT
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