Prove: Sq Root of a Sum ≤ Sum of the Sq Roots

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The discussion centers on proving the inequality n√(x+y) ≤ n√x + n√y for non-negative real numbers x and y. Participants are encouraged to share their attempts and ideas for approaching the proof. The conversation highlights the need for a clear understanding of the properties of square roots and inequalities. Various methods and mathematical principles may be suggested to establish the validity of the statement. Engaging in this proof can enhance comprehension of inequalities in mathematics.
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Homework Statement


(x.y)ER+ that means x and y >=0

Homework Equations



Prove that n√(x+y)<=n√x + n√y

The Attempt at a Solution

 
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Hafsaton said:

Homework Statement


(x.y)ER+ that means x and y >=0

Homework Equations



Prove that n√(x+y)<=n√x + n√y

The Attempt at a Solution


You need to show your best attempt at this question. Any ideas?
 
Furthermore, choose a title that describes what the question is about.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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