posted by Lucas on .
In a quadratic sequence.....Term 2 is 11,Term 4 is -7,term 7 is -64....determin the general term for the sequence
4a + 2b + c = 11
16a + 4b + c = -7
49a + 7b + c = -64
(a,b,c) = (-2,3,13)
So, Tn = -2n^2 + 3n + 13
How dd u fynd dem....lyk de steps
just solved the system of equations. I used wolframalpha.com, but you can use elimination, determinants, substitution, or whatever you like to use for solving systems of equations.
Algebra I stuff. Dust off those skills.