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| size(216); | | size(216); |
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− | real e = 2.718281828459045235360287471352662497757247093699959574966967627724076630353;
| + | draw((0,10)--(0,0)--(10,0)); draw((5,10)--(0,0)--(10,5)); |
− | real pi = 3.141592653589793238462643383279502884197169399375105820974944592307816406286;
| + | label("$ct$",(0,10),N); label("$x$",(10,0),E); |
| + | label("$ct'$",(5,10),N); label("$x'$",(10,5),E); |
| | | |
− | //xaxis(-1,5);
| + | dot((0,3),blue); dot((3,6),blue); draw((0,3)--(3,6),blue); |
− | //yaxis(-1,5);
| + | label("$ct_1$",(0,3),W,blue); label("$ct_2'$",(3,6),NW,blue); |
− | | |
− | //real f(real x) { return abs(x); }
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− | | |
− | draw((2,3)--(0,0)--(4,0),Arrows); draw((0,0)--(2,0),EndArrow); draw((2,0)--(2,3),dashed); draw(rightanglemark((4,0),(2,0),(2,3),4));
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− | | |
− | label("$\mathbf{a}$",(4,0),E); label("$\mathbf{b}$",(2,3),NE); label("$\mathbf{b}_{\parallel}$",(2,0),S); label("$\theta$",(0.3,0.1),NE);
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− | | |
− | //limits((-1,-4),(6,6),Crop);
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− | </asy>
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− | | |
− | <asy>
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− | import three; import graph3;
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− | currentprojection=orthographic(4,-4,1);
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− | size(216);
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− | | |
− | xaxis3("$A$",0,3);
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− | yaxis3("$A'$",0,3);
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− | zaxis3("$\hat{\mathbf{n}}$",-1,2);
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− | | |
− | draw((3,0,0)--(0,0,-1)--(0,3,0)--(2,0,0));
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− | | |
− | label("$O$",(0,0,-1),W); label("$B$",(0,0,0),W); label("$C$",(2,0,0),SW); | |
| </asy> | | </asy> |