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\psaxes[Ox=0,Dx=3,Oy=0,Dy=2,linewidth=0.1pt]{->}(0,0)(0,0)(7.5,5.5)%Schnittpunkt, x0, y0   x1,y1



	
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\rput[l](1.2,1.9){\color{magenta}$\vec{a}$}
\rput[l](3,3.5){\color{blue}$\vec{a}+\vec{b}$}
\rput[l](4,1.25){\color{red}$\vec{b}$}
\rput[1](2.0,-0.5){\color{magenta}{$a_1$}} %%a1
\rput[1](-0.50,4){\color{magenta}{$a_2$}} %%a2
\rput[1](5.0,-0.5){\color{red}{$b_1$}} %%b1
\rput[1](-0.5,1){\color{red}{$b_2$}} %%b2
\rput[1](7.2,-0.5){\color{blue}{$a_1+b_1$}} %%c1
\rput[1](-1,5){\color{blue}{$a_2+b_2$}} %%b2
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\rput[c](3.5, 5.6){Parallelogramm}
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