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Jasten
30.08.2019 •
Mathematics
Solve 2 tan θ = 2 cot θ for all values of θ if θ is measured in degrees.
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Ответ:
2tanθ = 2cotθ
tanθ = cotθ
tanθ = 1 /tanθ
tan²θ = 1
tanθ = ±1
if tanθ = 1
θ = 45° + nπ (π = 180° , n is a natural number)
if tanθ = -1
θ = 135° + nπ
Ответ:
f(x) = (x – 8)(x – 4)(x – 4)(x + 3)
Step-by-step explanation:
A polynomial function with roots
has the following format:
In which a is the leading coefficient.
In this problem, we have that:
Leading coefficient 1, so![a = 1](/tpl/images/0118/1519/01393.png)
roots -3 and 8 with multiplicity 1, so
.
root 4 with multiplicity 2, so![(x - 4)^{2} = (x - 4)(x - 4)](/tpl/images/0118/1519/0c81d.png)
So the correct answer is:
f(x) = (x – 8)(x – 4)(x – 4)(x + 3)