Determine all stationary points of f(x)=x34x2+6x.
x=4+1240 and x=41240.
x=0
x=0 and x=223
There are no stationary points.
Determine all stationary points of f(x)=x34x2+6x.
Antwoord 1 correct
Correct
Antwoord 2 optie
x=4+1240 and x=41240.
Antwoord 2 correct
Fout
Antwoord 3 optie
x=0 and x=223
Antwoord 3 correct
Fout
Antwoord 4 optie
x=0
Antwoord 4 correct
Fout
Antwoord 1 optie
There are no stationary points.
Antwoord 1 feedback
Correct: f(x)=3x28x+6. D=(8)2436=8<0 and hence, f(x) has no zeros, which implies that f(x) has no stationary points.

Go on.
Antwoord 2 feedback
Wrong: f(x)x28x+6.

See Derivative.
Antwoord 3 feedback
Wrong: The discriminant D is equal to D=b24ac, not to D=b2+4ac.

See Extra explanation: zeros.
Antwoord 4 feedback
Wrong: A stationairy point c is not a point such that y(c)=0.

See Stationary point.