Thread: Stationary points?

Got a question Im not too sure about D;

1.a) y= (2x+3)(x-2)(x+1)
i) Sketch the graph ( I know how to do this )
ii) State the domain over which the function is decreasing.

Please explain it, Thanks.

Originally Posted by Klutz

Got a question Im not too sure about D;

1.a) y= (2x+3)(x-2)(x+1)
i) Sketch the graph ( I know how to do this )
ii) State the domain over which the function is decreasing.

Please explain it, Thanks.

function is decreasing over the intervals where y' < 0

so is it where the gradient is negative?

Originally Posted by Klutz

so is it where the gradient is negative?

That is what post #2 said.