Interactive plot 互动制图
plot 制图
The system auto plot when you hit the ENTER key, move mouse wheel on graph to zoom and move.
important plane curves
solve equation graphically
input sin(x)-0.5=0, hit the ENTER key or click the plot button, then put mouse on cross between its curve and the x-axis to show the x-axis value for solution ,
sin(x)-0.5=0
plot sin(x) and x^2, put mouse on cross between two curves to show solution.
sin(x) and x**2
implicit plot
implicit plot sin(x)=y to show a multivalue function,
implicitplot( x=sin(y) )
parametric plot
parametric plot with default pararmter t
x=sin(t),y=sin(4*t)
polar plot
polarplot( 2*sin(4*x) )
polarplot( exp(cos(x))-2*cos(4*x)+sin(x/12)**5,x,0,50 ) butterfly
dynamic plot
tangent plot, by moving mouse on the curve to show tangent
tangentplot( sin(x) )
secant plot, by moving mouse on the curve to show secant
secantplot( sin(x) )
overlap plot
overlap plot by clicking the overlap button or with overlapplot
complex plot
In order to plot complex function, you should convert it to complex by tocomplex(x) before plot. Use complex(x) to set variable for complex variable in real value, and Use complex(0,x) to set variable for complex variable in imag value. Get real part by re() and imag part by im(). e.g. convert log(x) to re(log(complex(x))).
plot complex number with entering complex number in complex(1,1) format, e.g.
complex(1,1)
or convert 1-i to complex() with tocomplex( )
tocmplex(1-i)
plot complex function in real domain with complex2D( ), e.g.
complex2D(sqrt(x))
plot complex function in complex domain with complex3D( ), e.g.
complex3D(sqrt(x)) for 20 graphes in one plot.
More examples in complex function
area plot with integral
integral( ) plot the area under integral curve.