求 y=cos t/(1-sin t)的导数 1/1-sin t

求 y=cos t/(1-sin t)的导数 1/1-sin t matlab中怎么对下面的程序进行二维插值并画出三维视图呢?[x,y]=meshgrid(-2:1:2);t=2;Z=[(sin(t))^3 t^2 sin(t) cos(t) (sin(t))^2;t^2 sin(t) (cos(t))^4 cos(t) (sin(t))^2;t sin(t) cos(t) t^2 (sin(t))^2;sin(t) (cos(t))^3 t^2 (sin(t))^2 参数方程:x=1+cosθ*t,y=sinθ*t,求普通方程, y=1-sin(2x)/sin(x)-cos(x)求T.最值 x=a(t-sin t),y=a(1-cos t)(a>0) 求它的弧微分怎么求 RT (sin t) / ( 1-cos t)= 求由摆线x=a(t-sin t),y=a(1-cos t)及x轴所围成的图形的面积（0 已知 x = e^t * cos t y = e^t *sin t 求当t= π/3时dy/dx的值 Matlab程序：错误在哪里建立函数文件fun5.mfunction dy=fun5(t,y)dy=[(-5*sin(t)*(5*cos(t)-y(1))+5*cos(t)*(5*sin(t)-y(2)))*(5*cos(t)-y(1))./((5*cos(t)-y(1))^2+(5*sin(t)-y(2))^2),(-5*sin(t)*(5*cos(t)-y(1))+5*cos(t)*(5*sin(t)-y(2)))*(5*sin(t)- 摆线方程的参数方程x=a(t-sin t),y=a(1-cos t)中的a, matlab微分方程画图问题已知：x'[t] = 2 (Sin[t] - x[t]) /Sqrt[(Sin[t] - x[t])^2 + (Cos[t] - y[t])^2]y'[t] = 2 (Cos[t] - y[t]) /Sqrt[(Sin[t] - x[t])^2 + (Cos[t] - y[t])^2]初始x[0]=0y[0]=0画出（x,y）的轨迹 求解matlab绘制参数函数y=50*cos(t)-40*cos(t+7.5*((1-cos(3.1415926*t/55))-0.25*(1-cos(2*3.1415926*t/55))+36.86);x=50*sin(t)-40*sin(t+7.5*((1-cos(3.1415926*t/55))-0.25*(1-cos(2*3.1415926*t/55))+36.86);就是绘制这个方程的函数图象,t是 高中数学f(t)=1+Cos(2000*Pi*t)+Sin(4000*Pi*t)f(t)=1+Cos(2000*Pi*t)+Sin(4000*Pi*t) Pi为3.1415926 f(t)的频率【或周期】怎么求啊 matlab怎么画出三维曲线?t=(0:0.01:1)*pix=25*cos(t)y=(-60+25*sin(t))*(14.82-111*25*sin(t)+1250*sin(t)*sin(t)+1511.18*sin(t)-1511.18)/((50-50*sin(t))*sqrtm(900-61*25*sin(t)+625*sin(t)*sin(t)+1511.18sin(t)))-25sin(t)+sqrtm(1100)z=50-25*sqrtm((360 设x=a cos的3次方t y=a sin的3次方t求dy/dx 如图,求x=cos^3(t)、y=sin^3(t)围成的面积. 怎么求这个图形的面积 X=a cos^3*t Y=a sin^3*t 求导：x=cos^4*t,y=sin^4*t,求dy/dx