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Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation -lg2*(7/9)-2/9*lg2*(2/9) .
Question type: Mathematical calculation
Solution:
-lg2*(7/9)-2/9*lg2*(2/9)
=-lg2*0.777778-2/9*lg2*(2/9)
=-lg2*0.777778-2/9*lg2*0.222222
=-0.30103*0.777778-2/9*lg2*0.222222
=-0.30103*0.777778-2/9*0.30103*0.222222
=-0.234135-2/9*0.30103*0.222222
=-0.234135-0.222222*0.30103*0.222222
=-0.234135-0.066895*0.222222
=-0.234135-0.014866
=-0.249001
Answer:-lg2*(7/9)-2/9*lg2*(2/9)=-0.249001