Chapter 1: Problem 52
Solve the following equations. $$\log _{5} x=-1$$
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Chapter 1: Problem 52
Solve the following equations. $$\log _{5} x=-1$$
These are the key concepts you need to understand to accurately answer the question.
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Explain why or why not Determine whether the following statements are true and give an explanation or counterexample. a. \(\sin (a+b)=\sin a+\sin b\) b. The equation \(\cos \theta=2\) has multiple solutions. c. The equation \(\sin \theta=\frac{1}{2}\) has exactly one solution. d. The function \(\sin (\pi x / 12)\) has a period of 12 e. Of the six basic trigonometric functions, only tangent and cotangent have a range of \((-\infty, \infty)\) f. \(\frac{\sin ^{-1} x}{\cos ^{-1} x}=\tan ^{-1} x\) g. \(\cos ^{-1}(\cos (15 \pi / 16))=15 \pi / 16\) h. \(\sin ^{-1} x=1 / \sin x\)
Shifting and scaling Use shifts and scalings to graph the given functions. Then check your work with a graphing utility. Be sure to identify an original function on which the shifts and scalings are performed. $$h(x)=-4 x^{2}-4 x+12$$
Consider the general quadratic function \(f(x)=a x^{2}+b x+c,\) with \(a \neq 0\) a. Find the coordinates of the vertex of the graph of the parabola \(y=f(x)\) in terms of \(a, b,\) and \(c\) b. Find the conditions on \(a, b,\) and \(c\) that guarantee that the graph of \(f\) crosses the \(x\) -axis twice.
Even and odd at the origin a. If \(f(0)\) is defined and \(f\) is an even function, is it necessarily true that \(f(0)=0 ?\) Explain. b. If \(f(0)\) is defined and \(f\) is an odd function, is it necessarily true that \(f(0)=0 ?\) Explain.
Designer functions Design a sine function with the given properties. It has a period of 12 with a minimum value of -4 at \(t=0\) and a maximum value of 4 at \(t=6\)
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