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〖1/1算式〗
作业:求算式 12*cos3.16-72*(cos2*3.16)*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2 的值.
题型:数学计算
解:
12*cos3.16-72*(cos2*3.16)*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*(36*(-0.999831)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*360.987833^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*360.987833^(-0.5)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*360.987833^-0.5-(36*(-0.999831)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*360.987833^-0.5-360.987833^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*360.987833^-0.5-360.987833^(-1.5)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*360.987833^-0.5-360.987833^-1.5*2592*(-0.018406)^2*(cos3.16)^2
=12*cos3.16-72*(-1.315025)*360.987833^-0.5-360.987833^-1.5*2592*(-0.018406)^2*(-0.999831)^2
=12*-0.999831-72*-1.315025*360.987833^-0.5-360.987833^-1.5*2592*-0.018406^2*-0.999831^2
=12*-0.999831-72*(-1.315025)*0.05263246590666-360.987833^(-1.5)*2592*(-0.018406)^2*(-0.999831)^2
=12*-0.999831-72*(-1.315025)*0.05263246590666-0.000145801218477*2592*(-0.018406)^2*(-0.999831)^2
=12*-0.999831-72*(-1.315025)*0.05263246590666-0.000145801218477*2592*0.000338780836*(-0.999831)^2
=12*-0.999831-72*(-1.315025)*0.05263246590666-0.000145801218477*2592*0.000338780836*0.999662028561
=-11.997972-72*(-1.315025)*0.05263246590666-0.000145801218477*2592*0.000338780836*0.999662028561
=-11.997972-(-94.6818)*0.05263246590666-0.000145801218477*2592*0.000338780836*0.999662028561
=-11.997972-(-4.983337)-0.000145801218477*2592*0.000338780836*0.999662028561
=-11.997972--4.983337-0.377917*0.000338780836*0.999662028561
=-11.997972--4.983337-0.000128*0.999662028561
=-11.997972--4.983337-0.000128
=-7.014635-0.000128
=-7.014763 答案:12*cos3.16-72*(cos2*3.16)*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2=-7.014763 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!