CLEP COLLEGE ALGEBRA| COMPREHENSIVE Q&A FOR CERTIFICATION SUCCESS

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CLEP COLLEGE ALGEBRA| COMPREHENSIVE
Q&A FOR CERTIFICATION SUCCESS


logarithm subtraction - correct-answer -log a - log b = log a/b




logarithm power rule - correct-answer -log a^b = b log a




arithmetic sequence - correct-answer -an= a1 + (n-1)d




sum of arithmetic sequences - correct-answer -Sn= n/2[2a1+(n-1)d] or
Sn= n/2 (a1+a2)




geometric sequence - correct-answer -an=a1r^n-1 where a1 is the first term, r is
the common ratio and n is number of terms




sum of geometric sequences - correct-answer -Sn= [a1(1-r^n)]/ 1-r

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sum of infinite geometric sequences - correct-answer -Sn= a1/1-r
a1 is the first term, r is the common ratio, and n is the number of terms




factorial - correct-answer -n! = n(n-1)(n-2)... 3(2)(1)




combination of n choose r - correct-answer -nCr= n!/r!(n-r)!




determinant of 2x2 matrix - correct-answer -a b
c d = ad-bc




find the additive inverse of (expression) - correct-answer -solve the equation for y:
y + (expression) = 0
it is the negative of the expression




raise expression to a negative number - correct-answer -1/ (expression)^n