We know that domain of log(x) is ∀ x>0.
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domain of log(7x) is also ∀ x>0, or (0,∞) in interval notation.
Answer:
x ∈ {2π/3, π, 4π/3} ≈ {2.09440, 3.14159, 4.18879}
Step-by-step explanation:
The equation can be put into standard form by adding 1:
2cos²(x) +3cos(x) +1 = 0
(2cos(x) +1)(cos(x) +1) = 0
Values of cos(x) that make this true* are ...
cos(x) = -1/2 . . . . . . . . . true for x=2π/3, x=4π/3
cos(x) = -1 . . . . . . . . . . . true for x=π
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A graphing calculator can be helpful here, too.
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* from your knowledge of the short table of trig functions and their signs in different quadrants
Answer:
15.81
Step-by-step explanation:
Please mark brainliest if this has helped. Have a good day and goodluck with your work!
Answer:
i Am bro
Step-by-step explanation: