k1 Math Final
Terms
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- Difference of squares
- (rad a - rad b)(rad a + rad b)
- Difference/Sum of cubes
- Sum: (a+b)(a^2-ab+b^2) diff: (a-b)(a^2+ab+b^2)
- (a+/-b)^2
- a^2+/-2ab+b^2
- rad (a^2)
- absolute a
- X in/out of the house
- x in the house- sqaure both sides x out: solve for x
- Parabola
- y-k=a(x-h)^2
- h
- -b/2a
- Quadratic equation
- a(x^2-(sum roots)+(prod roots)
- Direct Variation
- y=kx or k=y/x
- Inverse and Joint Variation
- inverse: y=k/x joint: z=kxy
- rational roots
- plus or minus k/h (or c/a)
- Distance formula
- rad((x2-x1)^2+(y2-y1)^2)
- MP Formula
- x1+x2/2, y1+y2/2
- Circles
- (x-h)^2 + (y-k)^2= radius^2
- Elipses and hyperbolas
- see real cards
- Parabola: Focus and Directrix
- x^2: f= (h, k+c) d= y=k-c a of s= x=h y^2: f= (h+c, k) d= x= h-c a of s= y=k
- Definition of b^p/q
- b^p/q=(the qth root of b)^p= the qth root of b^p
- Slope
- Y2-Y1/ x2-x1
- Domain
- What x can not equal. Ie: a radical cannot equal a neg. number and the denomenator of a fraction cannot equal zero.
- Zeros
- When y=0 what does numerator equal.