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
(0.575×7.55+0.68×0.43+0.7×16.47+0.65×8.28)/32.73=
348.13×(tan(45+15.2/2)*tan(45+15.2/2))+2×13.24×tan(45+15.2/2)=
348.13×(tan(45-15.2/2)*tan(45-15.2/2))-2×13.24×tan(45-15.2/2)=
(8×7.55+19×0.43+14×16.47+16.2×8.28)/32.73=
(22×7.55+10.8×0.43+12.9×16.47+13.8×8.28)/32.73=
343.74×(tan(45+14.52/2)*tan(45+14.52/2))+2×13.98×tan(45+14.52/2)=
343.74×(tan(45-14.52/2)*tan(45-14.52/2))-2×13.98×tan(45-14.52/2)=
343.74×(tan(45-14.52/2)*tan(45-14.52/2))+2×13.98×tan(45-14.52/2)=
245.02+209.5+20=
212.23+209.5+20=
395.195×(tan(45+14.85/2)*tan(45+14.85/2))+2×14.12×tan(45+14.85/2)=
395.195×(tan(45-14.85/2)*tan(45-14.85/2))-2×14.12×tan(45-14.85/2)=
395.195×(tan(45-14.85/2)*tan(45-14.85/2))-2×14.12×tan(45-14.85/2)=
17.8×3.93+19×2.35+17.8×(8.11-2.35-3.93)+(17.8-9.8)×(17.85-8.11+2.35+3.93)+(17.9-9.8)×7.49+(19.1-9.8)×0.69+(19.2-9.8)×1.09+(17.9-9.8)×5.25
17.8×3.93+19×2.35+17.8×(8.11-2.35-3.93)+(17.8-9.8)×(17.85-8.11+2.35+3.93)+(17.9-9.8)×7.49+(19.1-9.8)×0.69+(19.2-9.8)×0.14
471.7/(3.35×0.8)
0.25×1.0×800×555
0.25×0.8×800×555
1.0×14.3×3350×34.75×(555-34.75/2)
1.0×14.3×800×37.95×(555-37.95/2)
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