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p1 = plot(sin, (-2*pi, 2*pi), thickness=2.0, rgbcolor=(0.160,0.32,0.240),legend_label='sin(x)')
show(p1)
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f=(x+2)*(x-4)-(x+3)^2+4
g=2*x-1
show(solve(f==g,x)[0])
a=plot(f, (x,-5,5))
b=plot(g, (x,-5,5))
show(a+b)
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f(x)=1/(x-2)+1/(x+2)
show(solve(f,x)[0])
plot(f, (x,-2,2))
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f=(x-1)*(x+2)-x*(x+3)
g=2
show(solve(f<=g,x)[0][0])
a=plot(f, (x,-5,5), color='black')
b=plot(g, (x,-5,5), color='gold')
show(a+b)
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