matlab 化简公式,都是符号,有这个功能吗~a1=(u-1)/rb^2;a2=1/ra;b1=2(u+1);b2=2r;f1=q/d*(rb^2/8*(2*(u+1)lnrb+u+3)-(u+3)*rb^3/16);f2=q/d*(rb^2/8*(2*ra*lnra+ra)-ra^3/16);c1=(b2*f1-b1*f2)/(b2*a1-a2*b1);c2=-q*rb^4/8/d;c3=(a2*f1-a1*f2)/(b1*a2-a1*
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![matlab 化简公式,都是符号,有这个功能吗~a1=(u-1)/rb^2;a2=1/ra;b1=2(u+1);b2=2r;f1=q/d*(rb^2/8*(2*(u+1)lnrb+u+3)-(u+3)*rb^3/16);f2=q/d*(rb^2/8*(2*ra*lnra+ra)-ra^3/16);c1=(b2*f1-b1*f2)/(b2*a1-a2*b1);c2=-q*rb^4/8/d;c3=(a2*f1-a1*f2)/(b1*a2-a1*](/uploads/image/z/5163422-14-2.jpg?t=matlab+%E5%8C%96%E7%AE%80%E5%85%AC%E5%BC%8F%2C%E9%83%BD%E6%98%AF%E7%AC%A6%E5%8F%B7%2C%E6%9C%89%E8%BF%99%E4%B8%AA%E5%8A%9F%E8%83%BD%E5%90%97%7Ea1%3D%28u-1%29%2Frb%5E2%3Ba2%3D1%2Fra%3Bb1%3D2%28u%2B1%29%3Bb2%3D2r%3Bf1%3Dq%2Fd%2A%28rb%5E2%2F8%2A%282%2A%28u%2B1%29lnrb%2Bu%2B3%29-%28u%2B3%29%2Arb%5E3%2F16%29%3Bf2%3Dq%2Fd%2A%28rb%5E2%2F8%2A%282%2Ara%2Alnra%2Bra%29-ra%5E3%2F16%29%3Bc1%3D%28b2%2Af1-b1%2Af2%29%2F%28b2%2Aa1-a2%2Ab1%29%3Bc2%3D-q%2Arb%5E4%2F8%2Fd%3Bc3%3D%28a2%2Af1-a1%2Af2%29%2F%28b1%2Aa2-a1%2A)
matlab 化简公式,都是符号,有这个功能吗~a1=(u-1)/rb^2;a2=1/ra;b1=2(u+1);b2=2r;f1=q/d*(rb^2/8*(2*(u+1)lnrb+u+3)-(u+3)*rb^3/16);f2=q/d*(rb^2/8*(2*ra*lnra+ra)-ra^3/16);c1=(b2*f1-b1*f2)/(b2*a1-a2*b1);c2=-q*rb^4/8/d;c3=(a2*f1-a1*f2)/(b1*a2-a1*
matlab 化简公式,都是符号,有这个功能吗~
a1=(u-1)/rb^2;
a2=1/ra;
b1=2(u+1);
b2=2r;
f1=q/d*(rb^2/8*(2*(u+1)lnrb+u+3)-(u+3)*rb^3/16);
f2=q/d*(rb^2/8*(2*ra*lnra+ra)-ra^3/16);
c1=(b2*f1-b1*f2)/(b2*a1-a2*b1);
c2=-q*rb^4/8/d;
c3=(a2*f1-a1*f2)/(b1*a2-a1*b2);
c4=-(c1*lnra+c2*ra^2*lnr+c3ra^2+c4+q*ra^4/64/d);
fr=c1*lnr+c2*r^2*lnr+c3r^2+c4+q*r^4/64/d;
最后要fr的总式~
matlab 化简公式,都是符号,有这个功能吗~a1=(u-1)/rb^2;a2=1/ra;b1=2(u+1);b2=2r;f1=q/d*(rb^2/8*(2*(u+1)lnrb+u+3)-(u+3)*rb^3/16);f2=q/d*(rb^2/8*(2*ra*lnra+ra)-ra^3/16);c1=(b2*f1-b1*f2)/(b2*a1-a2*b1);c2=-q*rb^4/8/d;c3=(a2*f1-a1*f2)/(b1*a2-a1*
matlab 可以化简公式,但你的语句c4=-(c1*lnra+c2*ra^2*lnr+c3ra^2+c4+q*ra^4/64/d);中c4没有初值,得不出结果.