Quant Question Of The Day: 179
Algebra
Let f(x) be a quadratic polynomial with f(2) = 10 and f(–2) = – 2. Then the coefficient of x in f(x) is
1. 3
2. 2
3. 5
4. Cannot be determined
Let f(x) be a quadratic polynomial with f(2) = 10 and f(–2) = – 2. Then the coefficient of x in f(x) is
1. 3
2. 2
3. 5
4. Cannot be determined
f(2) = 10, f(–2) = –2 f(x) = ax2 + bx + c 10 = 4a + 2b + c ….. (1) –2 = 4a – 2b + c …… (2) From (1) and (2) b = 3
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