यदि sin theta=(x^(2)-y^(2))/(x^(2)+y^(2)) हो तो cos theta का मान होगा। 01:32 (x^(2)+x-1)/(x^(2)-1) में क्या जोड़ें कि योगफल 1 हो? 03:30 यदि दो...
Draw the graph of y=3 sin 2x 04:19 Let alpha and beta be non-zero real numbers such that 2 ( cos beta -... 04:35 Let -pi/6 < theta < -pi/12. Suppose alpha1 and beta1, are the roots of... 03:37 The value of overset(13)underset(k=1)(sum) (1)/(sin((pi)/(4) +...
直线 y = x 用极坐标表示为 t = π/4 抛物线 y = (1/2)x^2 用极坐标表示为 r = 2sint/(cost)^2 所围成的闭区域面积用极坐标表示为 S = ∫<0, π/4> (1/2)r^2dt = 2∫<0, π/4>[(sint)^2/(cost)^4]dt
x = 6 \sin 2\theta y = 6 \cos 2\theta (a) Sketch the curve represented by the parametric equations (indicate the orientation of the curve) and (b) eliminate the parameter and write the corresponding rectangular equation wh...
Find the slope of the curve r=2-3\sin\theta at the point (2,\pi). Find the slope of the curve x^3y^2 + 2x - 5y + 2 = 0 at the point (1,1). Find the slope of the curve y = x^3-13x at the point (1,-12). ...
GraphA Graph is an ordered pair of G = (V, E) comprising a set V of vertices or nodes together with a set E of edges or arcs, which are 2-element subsets of V (i.e. an edge is associated with two vertices, and that association takes the form of the unordered pair comprising ...
makeRotationonAxis(axis,theta):按一个轴旋转θ°,然后设置矩阵的值。 makeRotationonAxis(axis,theta) 的源码为: makeRotationAxis: function ( axis, angle ) { var c = Math.cos( angle ); var s = Math.sin( angle ); var t = 1 - c; ...
Find the length of the curve given parametrically by x = 3 cos theta , y = 3 sin theta, 0 less than or equal to theta less than or equal to 3 pi / 2. Consider the parametric equation x = 15(cos θ + sin θ) y = 15(s...
polar(theta,rho) theta—角度, rho—半径 例:建立简单的极坐标图形。 t=0:.01:2*pi; polar(t,sin(2*t).*cos(2*t)) 2. 多重曲线绘图(Multiple curve plotting) (1)一组变量绘图(A group variable plotting) plot(x,y) (a) x为矢量,y为矩阵时plot(x,y)用不同的颜色绘制y矩阵中各行或列对应...
rho=sin(2*theta); C、 %叶形线 t=0:0.1:5000; x2=3*t./(1+t.^3); y2=3*t.^2./(1+t.^3); D、%空间曲面 x=-10:0.05:10; y=x; [X,Y]=meshgrid(x,y); R=sqrt(X^2+Y^2)+eps; Z=sin(pi*R); %subplot subplot(2,2,1),plot(x0,y0,'r--O'),title('平面图形作图'...