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
70×2= 15×10= 16×50= 26×20= 70×20= 15×100= 16×500= 26×200= 70×200=
10×3= 28×20= 15×20= 11×40= 10×30= 28×200= 15×200= 11×400= 10×30=
40×30= 80×70= 14×300= 20×300= 40×300= 80×700= 28×2= 15×2= 11×4=
23×300= 60×400= 20×200= 14×3= 20×3= 40×3= 80×7= 14×30= 20×30=
lg(10+10)
lg(20)+lg(0.05)
14×50= 24×30= 18×50= 25×40= 14×5= 24×3= 18×5= 25×4= 41×50=
45+9
lg(20)
lg(0.05)
20^-1
15×40= 26×2= 16×2= 18×2= 15×4= 26×20= 16×20= 18×20= 15×40=
ln(0.05)-ln(20)
12×5= 22×2= 35×60= 17×20= 12×50= 22×20= 26×20= 16×20= 18×20=
ln(0.2)-ln(20)
21×40= 74×20= 52×20= 25×30= 14×30= 18×20= 13×30= 25×3= 14×3=
16×5= 26×3= 20×5= 27×4= 16×50= 26×30= 20×50= 27×40= 16×500=
[1.2×(65+0.135+0.45+0.333)+1.4×(3.0+2.0+2.0)]
17×4= 28×20= 18×20= 20×20= 17×40= 28×200= 18×200= 20×200= 17×400=
14×50= 24×20= 37×600= 19×200= 14×500= 24×200= 28×2= 18×2= 20×2=
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