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
178-87.21+ 43221+531921 -12.79
15 ×(- 5)÷(- 15 )× 5
2÷(-3/7)×4/7÷(-5 1/7)[15 1/2-114 ÷125 + 3 12 ]÷(-118 )
(-7/18)×3/7×2.4
(-1/6-3/20+4/5-7/12)×(-15×4)
141550622-56202-0014-4-0150-32-04--0124
tan(1.2)
cos(0.75)
1019607.84+35%*65%*1019607.84=
160000*(1-35%)/10.2%=
arctan5-arctan40-arctan0.05-arctan0.5-90
arctan8.2*0.249-arctan8.2-arctan0.82-arctan0.06*8.2
arctan3.6
(0.092+1.36*0.00435*1.052)/(0.126*1.318)
0.092+1.36*0.00435*1.052/(0.126*1.318)
(550000+365000)/(175000+150000/4)=
(550000+365000)/(175000+150000/(26/12))=
(550000+365000)/(175000+150000/2)=
(1.51-0.82+0.98-1.76+1.04-2.41+(-0.81)-(-0.92)+1.31-0.88+2.88-1.91)/3=
(1.51%-0.82%+0.98%-1.76%+1.04%-2.41%+(-0.81%)-(-0.92%)+1.31%-0.88%+2.88%-1.91%)/3=
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