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

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Arkesh Patel
Arkesh Patel 2018-2-22
评论： Roger Stafford 2018-2-23
f(x)=5x^2+9x+2
G(x)=3x+12
  1 个评论
James Tursa
James Tursa 2018-2-22
编辑：James Tursa 2018-2-22
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?

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回答（2 个）

Star Strider
Star Strider 2018-2-23
See the documentation on Anonymous Functions (link) and the linspace (link) function.
Roger Stafford
Roger Stafford 2018-2-23
x = linspace(-10,10);
f = 5*x.^2+9*x+2;
G = 3*x+12;
plot(x,f,'r-',x,G,'g-')

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