Mathematics
语言:
中文
Language:English
==equ==
Unary equation
Multivariate equation
==cal==
Solution inequality
Mathematical calculation
Fractional calculation
Mathematical statistics
Resolving prime factor
Fraction and Decimal Interactions
Lenders ToolBox
==LiAl==
Determinant
Matrix multiplication
Inverse matrix
==der==
Derivative function
==img==
Function image
==que==
Q&A
current location:Mathematical operation > History of Mathematical Computation
20lg80
20lg60
20lg50
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20lg3000
20lg30
20lg300
275863.368/17.64
0.298×12×77143
0.85/(2+0.85)=
20lg60
(36000+36000+29630+29630)/(2×77143)
20lg 50
175886.04/17.64
175886.04/4.2/4.2
0.19×12×77143
0.19×12×77143/4.2*4.2
20lg100
0.19×12×77143/4.22
20lg400
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