Ok so i have the next exercise.
I didn't had any problems solving a) and b)
What about c?
Can anyone tell me how to resolve it?
I googled it and found out that's Si(x)(whatever that is) and i don't know about what's that since i'm just last grade of high school.
Ok guys a second problem
The thing is i know how to solve the problem but i cannot really solve the system.
f(3)=0 -> x1=3 solution ->f = (X-3)(aX^2+bX+c)==>
so f(3)=0 ==>-3c=0 =>c=0
f(1)=8 ==> a+b=-4
f(4)=35 ==> 16a+4b=35
Can anyone solve the system or at least tell me where i'm wrong ? I'm getting very mad here.