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
arctan-0.2278
arctan(-0.441)
120×13735×26+120×13735×0.87
(-2.731×0.262+72.31×0.26+253.9)/(-2.731×1.42+72.31×1.4+253.9)
40-8*4
40-8*4
(40-8)/4
18/(6/2)
18/6*2
24/(3*2)
24/(3*2)
24/3/2
24/3/2
75-(39+21)
75-39-21
6-(25+7)
(23+25)/8
18+24/6
28+3*6
45/(9-4)
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