M11-formulas
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Sum of Arithmetic Series | Sn = n/2[2a + (n-1)d]
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Sum of Geometric Series | Sn = a(r^n - 1)
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How to find r = common ratio | r = tn+1 / tn
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Standard Form for Quadratic | y=ax^2+bx+c
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General geometric Sequence | tn = ar^n-1
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Vertex Form | y=a(x-h)^2+k
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Simple Interest 1 | I = Prt
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Simple Interest 2 | A = P + I
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Compound Interest | A=p(1+i)^n
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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
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Domain looks like... | D={x| -1 < x < 3}
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Range looks like... | R={y| -1 < y < 3}
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Reciprocal fxn: y=1/x starts in... | quadrant 2 and 3. 1, 0.5,0.5
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reciprocal Fxn graphs need: | asymptotes, all labeled arrows, domain and range
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inverses | y=x, switching x and y coordinates
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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
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determine eqn of reciprocal fxn inverse: y=1/x-2 + 3 | replace y with x, isolate for y
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quadratics has _ | (i) which = -1 for square roots
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Created by:
bioger
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