数学题怎么简化?
数字太长了,怎么把数字写的最少得数不变。[√(0.22²+0.19²)÷0.19×0.12]÷[√(0.22²+0.19²)÷0....
数字太长了,怎么把数字写的最少得数不变。 [√(0.22²+0.19²)÷0.19×0.12]÷[√(0.22²+0.19²)÷0.22×0.12]×[0.07+√(0.22²+0.19²)÷0.22×0.12]=0.2646
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√(0.22²+0.19²)÷0.19×0.12
=(12/19)√(0.22²+0.19²),
所以 [√(0.22²+0.19²)÷0.19×0.12]÷[√(0.22²+0.19²)÷0.22×0.12]
=12/19÷12/22
=22/19,
所以 [√(0.22²+0.19²)÷0.19×0.12]÷[√(0.22²+0.19²)÷0.22×0.12]×[0.07+√(0.22²+0.19²)÷0.22×0.12]
=(22/19)×[0.07+(12/22)√0.0845]
=154/1900+(12/19)√0.0845,
可以吗?
=(12/19)√(0.22²+0.19²),
所以 [√(0.22²+0.19²)÷0.19×0.12]÷[√(0.22²+0.19²)÷0.22×0.12]
=12/19÷12/22
=22/19,
所以 [√(0.22²+0.19²)÷0.19×0.12]÷[√(0.22²+0.19²)÷0.22×0.12]×[0.07+√(0.22²+0.19²)÷0.22×0.12]
=(22/19)×[0.07+(12/22)√0.0845]
=154/1900+(12/19)√0.0845,
可以吗?
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