9. Verify that Euler's formula does not hold for a graph that is not connected: count the vertices, edges, and faces of the graph below, and check whether Euler's formula applies with those numbers. E F

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A:

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A: We have given the values n(AUB)=155 , n(AnB)=30 and n(A)=105 . Then to find n(B) .

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Q: c) By using De Moivre's theorem, find (3/5 – 3i) in the standard form.

A: To find complex no. in standard form using De Moivre's theorem .

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Q: Q4) Find plane area inside the polar function r = 2 and outside polar function r = 2 sin ( + 0) in…

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Q: 2. What is the last digit in the product of 31x3 x3x --x32018 x32019x320207

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Q: | 2 3 4 3. 10 21

A: Here least square method cant is used for this function. The reason is given in the next step.

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