Mathematics
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==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(20)-arctan(1/20)
(arctan(20)-arctan(1/20))/3.14*180
1.428181/3.14*180
arctan14-arctan(1/14)
arctan(1/14)
arctan14
3456e
9941e3
6156e
7731e3
8923e3
3538e3
3538e
2(4)-4(4)+5
-2(-1)+7
4(5)-11
3000×85%=
8×3
0466e
3450e
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