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作业:求算式 0.5*(e^(1.6977)+e^(-1.6977))*sin(1.6977)-0.5*(e^(1.6977)-e^(-1.6977))*cos(1.6977) 的值.
题型:数学计算
解:
0.5*(e^(1.6977)+e^(-1.6977))*sin(1.6977)-0.5*(e^(1.6977)-e^(-1.6977))*cos(1.6977)
=0.5*(e^1.6977+e^(-1.6977))*sin(1.6977)-0.5*(e^(1.6977)-e^(-1.6977))*cos(1.6977)
=0.5*(e^1.6977+e^(-1.6977))*sin(1.6977)-0.5*(e^(1.6977)-e^(-1.6977))*cos(1.6977)
=0.5*5.644477*sin(1.6977)-0.5*(e^(1.6977)-e^(-1.6977))*cos(1.6977)
=0.5*5.644477*sin1.6977-0.5*(e^(1.6977)-e^(-1.6977))*cos(1.6977)
=0.5*5.644477*sin1.6977-0.5*(e^1.6977-e^(-1.6977))*cos(1.6977)
=0.5*5.644477*sin1.6977-0.5*(e^1.6977-e^(-1.6977))*cos(1.6977)
=0.5*5.644477*sin1.6977-0.5*5.278268*cos(1.6977)
=0.5*5.644477*sin1.6977-0.5*5.278268*cos1.6977
=0.5*5.644477*0.991959-0.5*5.278268*cos1.6977
=0.5*5.644477*0.991959-0.5*5.278268*-0.126563
=2.822239*0.991959-0.5*5.278268*(-0.126563)
=2.799545-0.5*5.278268*(-0.126563)
=2.799545-2.639134*(-0.126563)
=2.799545-(-0.334017)
=3.133562 答案:0.5*(e^(1.6977)+e^(-1.6977))*sin(1.6977)-0.5*(e^(1.6977)-e^(-1.6977))*cos(1.6977)=3.133562 注:弧度制你的问题在这里没有得到解决?请到 热门难题 里面看看吧!