作业帮用mathematica作方程图像问题,图像出不来ContourPlot[ 5.5 Sin\[Theta]*Cos\[Theta] - 1.05 (Cos\[Theta])^2 == 151.25/v^2,{v, 0,20},{\[Theta],0,\[Pi]/2}]不知道哪里错了,希望帮忙指正ContourPlot[5.5 Sinx*Cosx - 1.05 (Cosx)^2 == 151
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![用mathematica作方程图像问题,图像出不来ContourPlot[ 5.5 Sin\[Theta]*Cos\[Theta] - 1.05 (Cos\[Theta])^2 == 151.25/v^2,{v, 0,20},{\[Theta],0,\[Pi]/2}]不知道哪里错了,希望帮忙指正ContourPlot[5.5 Sinx*Cosx - 1.05 (Cosx)^2 == 151](/uploads/image/z/11297671-7-1.jpg?t=%E7%94%A8mathematica%E4%BD%9C%E6%96%B9%E7%A8%8B%E5%9B%BE%E5%83%8F%E9%97%AE%E9%A2%98%2C%E5%9B%BE%E5%83%8F%E5%87%BA%E4%B8%8D%E6%9D%A5ContourPlot%5B+5.5+Sin%5C%5BTheta%5D%2ACos%5C%5BTheta%5D+-+1.05+%28Cos%5C%5BTheta%5D%29%5E2+%3D%3D+151.25%2Fv%5E2%2C%7Bv%2C+++0%2C20%7D%2C%7B%5C%5BTheta%5D%2C0%2C%5C%5BPi%5D%2F2%7D%5D%E4%B8%8D%E7%9F%A5%E9%81%93%E5%93%AA%E9%87%8C%E9%94%99%E4%BA%86%2C%E5%B8%8C%E6%9C%9B%E5%B8%AE%E5%BF%99%E6%8C%87%E6%AD%A3ContourPlot%5B5.5+Sinx%2ACosx+-+1.05+%28Cosx%29%5E2+%3D%3D+151)
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用mathematica作方程图像问题,图像出不来ContourPlot[ 5.5 Sin\[Theta]*Cos\[Theta] - 1.05 (Cos\[Theta])^2 == 151.25/v^2,{v, 0,20},{\[Theta],0,\[Pi]/2}]不知道哪里错了,希望帮忙指正ContourPlot[5.5 Sinx*Cosx - 1.05 (Cosx)^2 == 151
用mathematica作方程图像问题,图像出不来
ContourPlot[
5.5 Sin\[Theta]*Cos\[Theta] - 1.05 (Cos\[Theta])^2 == 151.25/v^2,{v,
0,20},{\[Theta],0,\[Pi]/2}]
不知道哪里错了,希望帮忙指正
ContourPlot[
5.5 Sinx*Cosx - 1.05 (Cosx)^2 == 151.25/v^2,{v,0,20},{x,
0,\[Pi]/2}]
用mathematica作方程图像问题,图像出不来ContourPlot[ 5.5 Sin\[Theta]*Cos\[Theta] - 1.05 (Cos\[Theta])^2 == 151.25/v^2,{v, 0,20},{\[Theta],0,\[Pi]/2}]不知道哪里错了,希望帮忙指正ContourPlot[5.5 Sinx*Cosx - 1.05 (Cosx)^2 == 151
函数的参数要用方括号,所以你的Sinx,Cosx要改为Sin[x],Cos[x],见下面：
ContourPlot[5.5 Sin[x]*Cos[x] - 1.05 (Cos[x])^2 == 151.25/v^2, {v, 0, 20}, {x,
0, \[Pi]/2}]
