I want to plot F(x) and G(x) in same graph for x=(-10,10) how can I do this?

f(x)=5x^2+9x+2
G(x)=3x+12

[James Tursa]

What have you done so far? What specific problems are you having with your code? Do you know how to evaluate polynomials for a vector input? Do you know how to plot?

Answer 1

[Star Strider]

See the documentation on Anonymous Functions (link) and the linspace (link) function.

Answer 2

[Roger Stafford]

   x = linspace(-10,10);
   f = 5*x.^2+9*x+2;
   G = 3*x+12;
   plot(x,f,'r-',x,G,'g-')

[James Tursa]

Roger, this is tagged as homework ...

[Roger Stafford]

Oops!