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Sat Subject Math II Review
Formulas and concepts.
17
Mathematics
12th Grade
09/16/2013
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Term
N.pow(a/b)=?
 Definition
squrtb(N.pow(a));
Term
Log(a,b)=?
 Definition
X if a.pow(X)=b
Term
Log (a*b)= ?
 Definition
Log a + Log b
Term
Log (a/b)= ?
 Definition
Log a - Log b
Term
Log(a.pow(n))=?
 Definition
n*Log(a);
Term
ln (a)= ?
 Definition
n if [(e=2.718).pow(n)]=a
Term
Ln x=b
Find 2 more expressions
 Definition
Log(e,x)=b
e.pow(b)=x
Term
Graph of y=ln x
 Definition
Coming from left of the 4th quadran, crosses x-axis and starts deviating to the right.
Term
Graph of y=e.pow(x)
 Definition
Coming from left bottom of 2nd quadran, deviates upwards after crossing the y-axis. IT IS THE IMAGE OF THE LNX GRAPH WHILE CENTER OF TRANS IS O.
Term
Methods of answering ?
 Definition
Algebra
Plugging numbers if vars.
Term
Trans and def : Term
 Definition
حد
A constant or variable and its coeff.
BEWARE: in x-1 : Terms={x, -1};
Term
Expressions ?
 Definition
Expressions are terms put together, NO EQUAL SIGNS. Can be simplified but not solved.
Term
Equation
 Definition
2 Expressions linked by an equal sign.
Term
Solve : Abs(x+1)>10
 Definition
ONE x+1>10 >> x>9
TWO x+1<-10 >> x<-11
Term
Solve s-t for 1 < t< 3 and -2 < s < 4
 Definition
BEFORE, you SHOULD get range of -t
THIS APPLIES TO DIVISION ALSO. Get range of 1/x BEFORE.
Term
Parentheses to ranges
 Definition
NON INCLUDED ()
Term
BRACKETS TO RANGESq
 Definition
INCLUDED []
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