复杂三角函数三元方程求解(超急!!!在线等!!!)
方程1:G*10*cot(theta)=10*T2/sin(theta)+T3*(7*tan(theta)+10);方程2:G*(a/2-10/sin(theta))=T...
方程1:G*10*cot(theta)=10*T2/sin(theta)+T3*(7*tan(theta)+10);
方程2:G*(a/2-10/sin(theta))=T3*7*tan(theta)-Ti*10/tan(theta);
方程3:G*(7-a/2+10/sin(theta))=T2*7/cos(theta)+T1*(10*cot(theta)+7)
其中G与a皆为常数
求T1,T2,T3的表达式!!!超急!!!最好有过程!!!在线等!!! 展开
方程2:G*(a/2-10/sin(theta))=T3*7*tan(theta)-Ti*10/tan(theta);
方程3:G*(7-a/2+10/sin(theta))=T2*7/cos(theta)+T1*(10*cot(theta)+7)
其中G与a皆为常数
求T1,T2,T3的表达式!!!超急!!!最好有过程!!!在线等!!! 展开
1个回答
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线性方程组的一样解法,消元
T1=1/4*G*(a*sin(theta)-20)*cos(theta)/(-10*cos(theta)*sin(theta)-7+7*cos(theta)^2)
T2=-1/28*G*(28-28*cos(theta)^2-2*a+2*cos(theta)^2*a+40*sin(theta)+cos(theta)*a*sin(theta)-20*cos(theta))*cos(theta)/(-1+cos(theta)^2)
T3=-1/14*cos(theta)*G*(-7*a*sin(theta)+2*cos(theta)^2*a*sin(theta)-10*a*cos(theta)+10*a*cos(theta)^3+140-40*cos(theta)^2+200*cos(theta)*sin(theta))/(10*cos(theta)*sin(theta)-10*cos(theta)^3*sin(theta)+7-14*cos(theta)^2+7*cos(theta)^4)
T1=1/4*G*(a*sin(theta)-20)*cos(theta)/(-10*cos(theta)*sin(theta)-7+7*cos(theta)^2)
T2=-1/28*G*(28-28*cos(theta)^2-2*a+2*cos(theta)^2*a+40*sin(theta)+cos(theta)*a*sin(theta)-20*cos(theta))*cos(theta)/(-1+cos(theta)^2)
T3=-1/14*cos(theta)*G*(-7*a*sin(theta)+2*cos(theta)^2*a*sin(theta)-10*a*cos(theta)+10*a*cos(theta)^3+140-40*cos(theta)^2+200*cos(theta)*sin(theta))/(10*cos(theta)*sin(theta)-10*cos(theta)^3*sin(theta)+7-14*cos(theta)^2+7*cos(theta)^4)
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