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作业:求算式 2/sqrt(3)*500*ln(0.087/0.05)-390+390*0.05^2/(0.1^2-0.05^2)*(0.1^2/0.087^2-1) 的值.
题型:数学计算
解:
2/sqrt(3)*500*ln(0.087/0.05)-390+390*0.05^2/(0.1^2-0.05^2)*(0.1^2/0.087^2-1)
=2/sqrt3*500*ln(0.087/0.05)-390+390*0.05^2/(0.1^2-0.05^2)*(0.1^2/0.087^2-1)
=2/sqrt3*500*ln1.74-390+390*0.05^2/(0.1^2-0.05^2)*(0.1^2/0.087^2-1)
=2/sqrt3*500*ln1.74-390+390*0.05^2/0.0075*(0.1^2/0.087^2-1)
=2/sqrt3*500*ln1.74-390+390*0.05^2/0.0075*0.321178
=2/1.732051*500*ln1.74-390+390*0.05^2/0.0075*0.321178
=2/1.732051*500*0.553885-390+390*0.05^2/0.0075*0.321178
=2/1.732051*500*0.553885-390+390*0.0025/0.0075*0.321178
=1.1547*500*0.553885-390+390*0.0025/0.0075*0.321178
=577.35*0.553885-390+390*0.0025/0.0075*0.321178
=319.785505-390+390*0.0025/0.0075*0.321178
=319.785505-390+0.975/0.0075*0.321178
=319.785505-390+130*0.321178
=319.785505-390+41.75314
=-70.214495+41.75314
=-28.461355 答案:2/sqrt(3)*500*ln(0.087/0.05)-390+390*0.05^2/(0.1^2-0.05^2)*(0.1^2/0.087^2-1)=-28.461355你的问题在这里没有得到解决?请到 热门难题 里面看看吧!