Hit flag to start, try to change variables, each variables consist by: Precision : Plot-step division. Bigger value, better graph. Scale : Graph scale, smaller value, widen region. Equation: Choice of equation to graph (internal): 1) axx+bx+c-y (parabola) 2) sin(x/a)-cos(y/b) (semi-circular pattern) 3) (x-a)^2+(y-b)^2-c^2 (circle equation) 4) sin(xx-yy)-cos(2xy) (skew plane) Otherwise, press "i" to enter equation to be plotted. Then try to change variables (a,b,c) for graph translation. Arguments as your entered function, too. [space] to graph detail, things stopped, and wait.
To see through the graph of those equations natively that used here, they are (equations) too, written there: https://www.desmos.com/calculator/fzce92mp2b Thanks to griffpatch for his Mathematic Evaluator! This idea has come from curiousity about how do the program make "non-function" which is both of variables are independent could be graphed. Then the hint such makes sense for its approximation graph, come to here: https://math.stackexchange.com/questions/2433930/how-can-a-non-function-be-graphed/2589955#2589955 For this workaround, it is tries to plot through z=f(x,y), by finite lattice points, and determining their intersection (formed in triangle through three connecting points) between them with xy-plane. No matter how the pattern is, but should be triangular for simplicity. --- Well, Insha Allah if I could derive this method into another project...
