Chapter 2: Problem 126
Show that \(\sqrt{5} \cdot 5^{3 / 2}=25\).
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Chapter 2: Problem 126
Show that \(\sqrt{5} \cdot 5^{3 / 2}=25\).
These are the key concepts you need to understand to accurately answer the question.
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Find all real numbers \(x\) such that $$ x^{6}-3 x^{3}-10=0 $$.
Suppose you start driving a car on a hot summer day. As you drive, the air conditioner in the car makes the temperature inside the car \(F(t)\) degrees Fahrenheit at time \(t\) minutes after you started driving, where $$ F(t)=90-\frac{18 t^{2}}{t^{2}+65} $$ (a) What was the temperature in the car when you started driving? (b) What was the approximate temperature in the car 15 minutes after you started driving? (c) What will be the approximate temperature in the car after you have been driving for a long time?
A textbook states that the rabbit population on a small island is observed to be $$ 1000+120 t-0.4 t^{4} $$ where \(t\) is the time in months since observations of the island began. Explain why the formula above cannot correctly give the number of rabbits on the island for large values of \(t\).
Suppose \(M\) and \(N\) are odd integers. Explain why $$ x^{2}+M x+N $$ has no rational zeros.
Give an example of a polynomial \(p\) of degree 8 such that \(p(2)=3\) and \(p(x) \geq 3\) for all real numbers \(x\).
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