alisaharnauth
24.12.2019 •
Mathematics
Consider the quadratic function:
f(x) = x2 – 8x – 9
vertex:
what is the vertex of the function?
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Ответ:
y = 16 -8*4 -9 = 16 - 32 -9 = -25
the wertex is (4,-25)
Ответ:
+1 +3 +5 +7
+2 +2 +2
2÷2=1 so it begins with n^2
n^2= 1 4 9 16 25
-0 -2 -4 -6 -8
-2 -2 -2 -2
so we have -2n
The pattern is n^2-2n
The 8th term will be 8^2-2x8=64-16=48