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Sum of Arithmetic Series Sn = n/2[2a + (n-1)d]
Sum of Geometric Series Sn = a(r^n - 1)
How to find r = common ratio r = tn+1 / tn
Standard Form for Quadratic y=ax^2+bx+c
General geometric Sequence tn = ar^n-1
Vertex Form y=a(x-h)^2+k
Simple Interest 1 I = Prt
Simple Interest 2 A = P + I
Compound Interest A=p(1+i)^n
domain & Range: y=2x^2 + 3x + 1 completing the square factoring. divide mido by 2, square it + and -, kick - out and multiply anything, should look like parabola eqn
Domain looks like... D={x| -1 < x < 3}
Range looks like... R={y| -1 < y < 3}
Reciprocal fxn: y=1/x starts in... quadrant 2 and 3. 1, 0.5,0.5
reciprocal Fxn graphs need: asymptotes, all labeled arrows, domain and range
inverses y=x, switching x and y coordinates
determine eqn of LINEAR inverse: f(x)=5x-2 replace f(x) with y, switch x and y now, isolate for opp of f(X) which is y
determine eqn of reciprocal fxn inverse: y=1/x-2 + 3 replace y with x, isolate for y
quadratics has _ (i) which = -1 for square roots
Created by: bioger