Polynomial calculation in matlab

I need some help with making a program that calculates the value for f(x) = 3x^3 + x^2 +4x -6 and then plot f(x) for x from -1 to 1.

Answer 1

[Yu Jiang]

Take a look at the first example on this webpage

http://www.mathworks.in/help/matlab/ref/plot.html

and replace the "sin(x)" in it with your polynomial.

Also, to get the range you want, change

x = 0:pi/100:2*pi;

to, for example

x = 0:1/100:1;