starreee
05.05.2020 •
Mathematics
INCREDIBLY URGENT!
solve the equation: 2 sin(3x) = -1
[Put each step on a separate line - you may use radians or degrees for x, as long as you use the proper symbols] Each intersection between the two lines you graphed was a solution. Write down an expression for all the solutions. Use the variable "n" in place of an integer that, when you change it, gives you a new solution.
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Ответ:
Step-by-step explanation:
2sin(3x)=-1
3x=invsin(-1/2)
what angle gives 1/2, 30 deg or pi/6
So formal solution is pi/6 but there is another on the other side, at 7pi/6
The 2 basic solutions are: 11pi/18 and 7pi/18
So the expressions are
(11pi/18+2npi/3)
and (7pi/18+2npi/3)
Ответ:
it's the last option
ad/bd+cd/bd