求助matlab求和,为什么出现这种错误?。
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syms beta z;
f=(z - (13*beta*z)/(5*((18*z)/25 + 33/25)))^2/2 + (z - (13*beta*z)/(5*((83*z)/100 + 26/25)))^2/2 + (z - (z*((13*beta)/5 - 13/5))/((18*z)/25 - 32/25))^2/2 + (z - (z*((13*beta)/5 - 13/5))/((83*z)/100 - 39/25))^2/2;
s=symsum(f,z,0.15,0.8)
出现错误:??? Error using ==> mupadmex
Error in MuPAD command: Illegal range [sum::sum]
Error in ==> sym.symsum at 74
r = mupadmex('mllib::map',f.s,'mllib::symsum',x.s,a.s,b.s);
求助为什么出现这种错误?谢谢啊!
file:///C:/Users/sapphire/AppData/Local/Temp/E9BIPM$_%609%7D%60VS07%60VD9H1F.gif
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