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☆算术计算1题
〖1/1算式〗
作业:求算式 0.5×(e^(3.3072)+e^(-3.3072))×sin(3.3072)+0.5×(e^(3.3072)-e^(-3.3072))×cos(3.3072) 的值.
题型:数学计算
解:
0.5×(e^(3.3072)+e^(-3.3072))×sin(3.3072)+0.5×(e^(3.3072)-e^(-3.3072))×cos(3.3072)
=0.5×(e^3.3072+e^(-3.3072))×sin(3.3072)+0.5×(e^(3.3072)-e^(-3.3072))×cos(3.3072)
=0.5×(e^3.3072+e^(-3.3072))×sin(3.3072)+0.5×(e^(3.3072)-e^(-3.3072))×cos(3.3072)
=0.5×27.345179×sin(3.3072)+0.5×(e^(3.3072)-e^(-3.3072))×cos(3.3072)
=0.5×27.345179×sin3.3072+0.5×(e^(3.3072)-e^(-3.3072))×cos(3.3072)
=0.5×27.345179×sin3.3072+0.5×(e^3.3072-e^(-3.3072))×cos(3.3072)
=0.5×27.345179×sin3.3072+0.5×(e^3.3072-e^(-3.3072))×cos(3.3072)
=0.5×27.345179×sin3.3072+0.5×27.271942×cos(3.3072)
=0.5×27.345179×sin3.3072+0.5×27.271942×cos3.3072
=0.5×27.345179×-0.164851+0.5×27.271942×cos3.3072
=0.5×27.345179×-0.164851+0.5×27.271942×-0.986318
=13.67259×(-0.164851)+0.5×27.271942×(-0.986318)
=(-2.25394)+0.5×27.271942×(-0.986318)
=-2.25394+13.635971×(-0.986318)
=-2.25394+(-13.449404)
=-15.703344 答案:0.5×(e^(3.3072)+e^(-3.3072))×sin(3.3072)+0.5×(e^(3.3072)-e^(-3.3072))×cos(3.3072)=-15.703344 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!