A key incident that brought the United States into the war was the sinking of ____

History

2 answers:

stellarik [79]3 years ago

3 0

The lusitania is the answer

SashulF [63]3 years ago

3 0

The sinking of the Lusitania

The sinking caused a storm of protest in the United States because 128 American citizens were among the dead. The sinking helped shift public opinion in the United States against Germany, and was a factor in the United States' declaration of war nearly two years later. After World War I, successive British governments maintained there were no munitions on board Lusitania and the Germans were not justified in treating the ship as a naval vessel. In 1982, the head of the British Foreign Office's North America department admitted that there is a large amount of ammunition in the wreck, some of which is highly dangerous and poses a safety risk to salvage teams.[13][14]

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What is the maximum number of turns for the graph of f(x)=x^4+3x^2?

ohaa [14]

Answer:

The turns of a graph is represented by the number of maximum or minimum that the function has.

If we differenciate f(x) we get:

f'(x)=4x^3+6x

f'(x)=2x(2x^2 + 3)

Therefore f'(x) =0, when x=0. Given that negative roots are not defined.

Therefore, the number of turns will be given by the number of solutions of f'(x) which is 1.

Attached you find the graph of the function which confirms the number of turns.

If the function had other solutions, the maximum number of turns it could have is 3! because f'(x) is a third degree polynomial, therefore it can't have more than 3 solutions!