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
tan69.489669
arctan(sin20*sin35/sin10/sin25)
-5^2
(lg100000*ln(e10)+(1/32)^(-1/5))*(tan30*tan240+cos0)/(2/(27^(2/3)-sin270))
(180/19+892/99)*(180/19-892/99)+(180/19-892/99)*(180/19-892/99)/180/19-60/11-32/9
(180/19+892/99)*(180/19-892/99)+(180/19-892/99)*(180/19-892/99)
2×22.8×3.49×2.4+2×2.7×43.49×1.35+2×2.16×3.49×1.05+300×0.6×3×2.4
1×3×7.25×1.8+1×3×3.49×1.8+2×2.15×3.49×1.8+720×2.8×1.6×0.9
2×1.8×43.49×0.9+4×1.8×3.49×0.9+4×1.8×7.25×0.9+2×1.87×3.49×0.9+2×2.4×7.25×1.8
2×22.8×3.49×2.4+2×2.7×43.49×1.35+2×2.16×3.49×1.05+555×0.6×3×2.4
(100*3)*21%/(80*40%/(1+5*40%))
(100*80)/(2000*0.85)*(10/8)
(100*3)*21%/(80*40%/(1+1*40%))
(100*80)/(2000*0.85)*(8/4)
2-5/8
-8/5-2
(100*40+1200)/(600*0.85)*(9/8)
(100*17+1110) *21%/(200*60%/(1+3*70%))
(500*17+1110) *21%/(200*60%/(1+3*70%))
log(12,144)
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