f(x) = -- x^2 + 2x
THIS IS A LINEAR EQUATION OR QUADRATIC EQUATION
IS IT A LINEAR EQUATION?
WHY?? THEREＩＳ -x^2
HELP ME!! PLEASE~
MATHS QUESTION AGAIN?
2008-12-30 3:44 pm
回答 (6)
2008-12-30 3:49 pm
✔ 最佳答案
QUADRATIC EQUATIONThis is not a linear equation.
A linear equation has power (exponent of x) 1 as maximum.
A quadratic equation has power (exponent of x) 2 as maximum
-x^2 + 2x
Maximum power of x is 2, so it is quadratic.
2008-12-31 12:21 am
It is a quadratic equation as the highest degree is 2.
2008-12-30 11:53 pm
It's a quadratic formula because linear equations can't have the x variable raised to a degree other than 1.
2008-12-30 11:48 pm
It is quadratic. This is because the equation f(x)=0 also means that -f(x) is 0. So x^2-2x=0 is the same as the given equation. As a thumb rule, highest degree becomes that of equation
2008-12-30 11:48 pm
it is a quadratic.
linear equations have only x^1 (which is just x)
quadratics have x^2
linear equations have only x^1 (which is just x)
quadratics have x^2
2008-12-30 11:48 pm
It's a quadratic equation...
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