Solve f(x)=0 and Compute f(0) given f(x)=2x-7.

Mathematics

2 answers:

Zarrin [17]2 years ago

7 0

Step-by-step explanation:

f(x)=2x-7.

by substituting value 0 for x,

f (0)=2×0-7

f (0)=-7

levacccp [35]2 years ago

5 0

Answer:

Step-by-step explanation:

_______

Good evening ,

_______________

f(x)=0 ⇔ 2x-7 = 0 ⇔ 2x = 7 ⇔ x = $\frac{7}{2}$

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mr_godi [17]

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It is often convenient to cast the problem in the form f(θ) = 0. You can do that by adding 1 to both sides of the equation.

$4\sqrt{2}\cos{(\theta)}+4=0\\ \cos{(\theta)}+\dfrac{1}{\sqrt{2}}=0\qquad\mbox{divide by $4\sqrt{2}$}\\ \cos{(\theta)}=\dfrac{-\sqrt{2}}{2}\qquad\mbox{subtract $\dfrac{1}{\sqrt{2}}$}\\\\ \theta=\{\dfrac{3\pi}{4},\dfrac{5\pi}{4}\}\qquad\mbox{determine the corresponding angles}$