Sorry, I forgot to say the answer is not 0 nor 4....:confused:
The answer is not 0... the teacher said there is a though in it...
hey white devil the answer is definitely zero and not anything else
Well the thing is our teacher said he will give 5 marks to who will answer it... and some students did it...
I am a teacher and such status does not protect me from being wrong. Nor does it do so for your teacher (else, he/she has one terrific contract!).
Now, picture the graph of y=x on the interval [-4, 4]. As the function is symmetric about the origin, the integral from -4 to 0 is necessarily opposite that from 0 to 4. The sum of two opposites is, of course, zero.
it's me again. If the answer isn't zero the only possibility I can think of is that you should calculate the area which is enclosed by y = x and x = -2 and x = 2.
The straight line with the equation y = x has a zero at x = 0. Thus you have to split the integral into 2 parts:
earboth you're right :) I have asked in other forum (Arabic one) and they told me the answer and it's exactly as you did...
But could you please make it graphical?
Thank you earboth that's what I asked for... Thanks all...