Difference between revisions of "User:5849206328x"

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Line 9: Line 9:
 
// Label f;
 
// Label f;
 
// f.p=fontsize(6);
 
// f.p=fontsize(6);
xaxis(0,5);
+
//xaxis(0,5);
yaxis(0,5);
+
//yaxis(0,5);
  
 
//real f(real x) { return (2/3) * (e^(-15 * x) + e^((-5/3) * x)); }
 
//real f(real x) { return (2/3) * (e^(-15 * x) + e^((-5/3) * x)); }
Line 17: Line 17:
 
//draw(graph(f,0,4));
 
//draw(graph(f,0,4));
  
draw((0,0)--(4,3),EndArrow); draw((4,3)--(24/5,18/5),EndArrow); draw((4,3)--(17/5,19/5),EndArrow);
+
dot((0,0)); draw(circle((0,0),80)); dot((64,48));
label("$O$",(0,0),SW); label("$x$",(5,0),SE); label("$y$",(0,5),NW);
+
draw((64,48)--(28,21),EndArrow); draw((64,48)--(28,96),EndArrow);
label("$\mathbf{r}$",(2,1.5),NW); label("$\hat{\mathbf{r}}$",(24/5,18/5),ENE); label("$\hat{\theta}$",(17/5,19/5),NNW);
+
label("$m$",(64,48),NE); label("$\dot{\mathbf{r}}$",(28,96),NE); label("$-\frac{mv^2}{r}\hat{\mathbf{r}}$",(28,21),SE);
  
 
//limits((0,-2),(4,2),Crop);
 
//limits((0,-2),(4,2),Crop);
 
</asy>
 
</asy>

Revision as of 16:01, 19 July 2015

[asy] import slopefield;  size(216);  real e  = 2.718281828459045235360287471352662497757247093699959574966967627724076630353; real pi = 3.141592653589793238462643383279502884197169399375105820974944592307816406286;  // Label f; // f.p=fontsize(6); //xaxis(0,5); //yaxis(0,5);  //real f(real x) { return (2/3) * (e^(-15 * x) + e^((-5/3) * x)); } //pair g(real t, real k) { return (1/k * 3/5 * (1 - e^(-k * t)), -t/k + 1/k * (4/5 + 1/k) * (1 - e^(-k * t))); }  //draw(graph(f,0,4));  dot((0,0)); draw(circle((0,0),80)); dot((64,48)); draw((64,48)--(28,21),EndArrow); draw((64,48)--(28,96),EndArrow); label("$m$",(64,48),NE); label("$\dot{\mathbf{r}}$",(28,96),NE); label("$-\frac{mv^2}{r}\hat{\mathbf{r}}$",(28,21),SE);  //limits((0,-2),(4,2),Crop); [/asy]