Cracking the SAT Subject Test in Math 2, 2nd Edition (E) Summary ○Many SAT Subject Test in Math 2 questions require you to be comfortable with the definitions of various terms If you don’t know a term[.]
(E) Summary ○ Many SAT Subject Test in Math 2 questions require you to be comfortable with the definitions of various terms If you don’t know a term, make a flashcard and memorize it! ○ Make sure you know PEMDAS and apply it to EVERY question with multiple operations! Functions questions in particular can be tricky with respect to order of operations! There are two formulas for percent change: ã The basic formula for percent change is: ã The formula for repeated percent change is: Final = Original ì (1 Rate)# of changes If its a repeated percent increase, you add Rate If its a decrease, you subtract Rate ○ If you have a question that asks for the average, mean, or arithmetic mean, use the Average Pie: ○ Irrational numbers are numbers which CANNOT be simplified into a fraction using only integers If you have a TI-80 series calculator, you can use MATH->FRAC whenever you want to know the fraction equivalent of a decimal ○ Remember the rules for exponents: MADSPM Roots are the inverse operation of exponents; you can express roots either with the radical sign or with fractional exponents You can use fractional exponents to combine terms with different roots ○ Special exponents: • Any number, except 0, raised to the 0 power is 1 • Raising a number to the first power does not change the number • A negative exponent means take the reciprocal of the number (divide 1 by the number), and then apply the exponent • Fractional exponents are a way of writing exponents and roots together: The top of the fraction is the exponent and the bottom of the fraction is the root ... A negative exponent means take the reciprocal of the number (divide 1 by the number), and then apply the exponent • Fractional exponents are a way of writing exponents and roots together: The top of the fraction is the exponent and the bottom of... You can use fractional exponents to combine terms with different roots ○ Special exponents: • Any number, except 0, raised to the 0 power is 1 • Raising a number to the first power does not change the number • A negative exponent means take the reciprocal of the number...○ Remember the rules for exponents: MADSPM Roots are the inverse operation of exponents; you can express roots either with the radical sign or with fractional exponents