总述：本次共解1题。其中
           ☆算术计算1题

〖1/1算式〗
    作业：求算式 -90-arctan0.12×7.073-arctan0.02×7.073-arctan(1/0.205)*7.073-arctan(1/23.894)*7.073+arctan(1/1.3)*7.073+arctan(1/7.073)*7.073 的值.
    题型：数学计算
    解:
          -90-arctan0.12×7.073-arctan0.02×7.073-arctan(1/0.205)*7.073-arctan(1/23.894)*7.073+arctan(1/1.3)*7.073+arctan(1/7.073)*7.073
        =-90-arctan0.12×7.073-arctan0.02×7.073-arctan4.878049*7.073-arctan(1/23.894)*7.073+arctan(1/1.3)*7.073+arctan(1/7.073)*7.073
        =-90-arctan0.12×7.073-arctan0.02×7.073-arctan4.878049*7.073-arctan0.041852*7.073+arctan(1/1.3)*7.073+arctan(1/7.073)*7.073
        =-90-arctan0.12×7.073-arctan0.02×7.073-arctan4.878049*7.073-arctan0.041852*7.073+arctan0.769231*7.073+arctan(1/7.073)*7.073
        =-90-arctan0.12×7.073-arctan0.02×7.073-arctan4.878049*7.073-arctan0.041852*7.073+arctan0.769231*7.073+arctan0.141383*7.073
        =-90-0.119429×7.073-arctan0.02×7.073-arctan4.878049*7.073-arctan0.041852*7.073+arctan0.769231*7.073+arctan0.141383*7.073
        =-90-0.119429×7.073-0.019997×7.073-arctan4.878049*7.073-arctan0.041852*7.073+arctan0.769231*7.073+arctan0.141383*7.073
        =-90-0.119429×7.073-0.019997×7.073-1.368598*7.073-arctan0.041852*7.073+arctan0.769231*7.073+arctan0.141383*7.073
        =-90-0.119429×7.073-0.019997×7.073-1.368598*7.073-0.041828*7.073+arctan0.769231*7.073+arctan0.141383*7.073
        =-90-0.119429×7.073-0.019997×7.073-1.368598*7.073-0.041828*7.073+0.655696*7.073+arctan0.141383*7.073
        =-90-0.119429×7.073-0.019997×7.073-1.368598*7.073-0.041828*7.073+0.655696*7.073+0.140452*7.073
        =-90-0.844721-0.019997×7.073-1.368598*7.073-0.041828*7.073+0.655696*7.073+0.140452*7.073
        =-90-0.844721-0.141439-1.368598*7.073-0.041828*7.073+0.655696*7.073+0.140452*7.073
        =-90-0.844721-0.141439-9.680094-0.041828*7.073+0.655696*7.073+0.140452*7.073
        =-90-0.844721-0.141439-9.680094-0.295849+0.655696*7.073+0.140452*7.073
        =-90-0.844721-0.141439-9.680094-0.295849+4.637738+0.140452*7.073
        =-90-0.844721-0.141439-9.680094-0.295849+4.637738+0.993417
        =-90.844721-0.141439-9.680094-0.295849+4.637738+0.993417
        =-90.98616-9.680094-0.295849+4.637738+0.993417
        =-100.666254-0.295849+4.637738+0.993417
        =-100.962103+4.637738+0.993417
        =-96.324365+0.993417
        =-95.330948
    答案:-90-arctan0.12×7.073-arctan0.02×7.073-arctan(1/0.205)*7.073-arctan(1/23.894)*7.073+arctan(1/1.3)*7.073+arctan(1/7.073)*7.073=-95.330948
    注：弧度制

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