裴彦军《Mathcad解方程和方程组》

Mathcad16Mathcad[]MathCADM++[]MathCADM++MathCADMathCADMathCADMathCADRoot(f(x),x,[a,b])Polyroots(V)Minerr(x,y,z,)Find(x,y,z,)lsolve(M,v)Maximize(f,x,y)Minimize(f,x,y)Root(f(x),x,[a,b])f(x)=0[a,b]xPolyroots(V)VMinerr(x,y,z,)Find(x,y,z,)xyzFindGivenGiven-Findlsolve(M,v)MX=vMnXnvnMaximize(f,x,y)Minimize(f,x,y)f(x,y,)MathCAD1rootf(x)=0rootMathCAD200110523=+--xexfx()e3-xx2-5+:=x0:=rootrootfx()x,()2.236=Mathcad26frootfx()x,()()2.594-106-×=Result/Format,Math/Options0.0000019rootfx()x,()2.236340729=frootfx()x,()()1.8871010-×=rootfx()x,0,3,()2.236340729=[03]f(x)=0[24]Mathcad3610864202468102525505025-fx()1010-xRootRoot2Polyroots(V)RootRootPolyroots100V2x5x3-3x2+8-0V8-031-01()T:=VPolyrootspolyrootsV()1.395-0.51i+1.395-0.51i-0.7081.461i+0.7081.461i-1.376⎛⎜⎜⎜⎜⎜⎝⎞⎟⎟⎟⎟⎟⎠=5MathCADGiven-FindGiven-FindGivenFind32xy+2z2+5y34z+4xy⋅z2+2zMathcad46x1:=y0:=z0:=Given2xy+2z2+5y34z+4xy⋅z2+2zFindxy,z,()T1.3240.7470.896()=x=1.324,y=0.747,z=0.896x1-:=y1:=z5-:=Findxy,z,()T4.396-2.3842.388-()=x1-:=y10-:=z5:=Findxy,z,()T0.181-1.505-1.853()=LsolveMathCADMX=vlsolve(M,v)MnXnvn42x5y+3z-u+44xy-7z+2u+22x3y+z+2u+34x4y-z+3u+1MvM242451-34-3-7111223⎛⎜⎜⎜⎜⎝⎞⎟⎟⎟⎟⎠:=v4231⎛⎜⎜⎜⎜⎝⎞⎟⎟⎟⎟⎠:=lsolvelsolveMv,()T0.6220.48780.0488-0.1707()=lsolveMv,()T518220412-41741⎛⎜⎝⎞⎟⎠→=Ctrl+=”Ctrl+.Mathcad56MathCADMathCADM++VBCC++MathCADM++CMathCADCM++M++5:0352=--xx[]M++1.Mathcadfx()x25x-3-:=ans0rootfx()x,()52123712⋅[phone]⋅-⎛⎜⎜⎝⎞⎟⎟⎠→:=ans05.5410.541-()=2-Mathcadfx()x25x-3-:=bivab,err,()x0ab+()0.5⋅←i0←bx0←fb()fx0()0ifax0←otherwisex0ab+()0.5⋅←vix0←ii1+←fx0()errwhilevreturnfa()fb()0ifotherwise:=biv1-0,0.001,()T01234567890-0.75-0.625-0.563-0.531-0.547-0.539-0.543-0.541-0.542-0.542=biv36,0.0001,()T012345678905.255.6255.4385.5315.5785.5555.5435.5375.545.542=:,Mathcad66MathCADrootf(x)=0Polyroots(V)[e-mail]:[1]2001.7[2]MathCAD20012002.8[3]Mathcad2001200221[4]MathCAD20012001.9[5]Mathcad20002001.41Mathcad://caowm.nease.net/caowm1/index.html3Mathcad://member.netease.com/~long/book/mathcad.htm5Mathcad://://