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Parentheses before -1 and after 3x and before 3 and after 3x What is the answer to -2 cos2 3x-3 sin 3x equals 0?
I think you mean to solve:
(-2 cos23x) - (3 sin 3x) = 0
cos2 x + sin2 x = 1
⇒ cos2x = 1 - sin2 x
⇒ -2 cos2 3x - 3 sin 3x = -2(1 - sin2 3x) - 3 sin 3x = 0
⇒ 2 sin2 3x - 3 sin 3x - 2 = 0
⇒ (2 sin 3x + 1)(sin 3x - 2) = 0
⇒ sin 3x = -1/2 or 2
sin 3x = 2 is impossible as the range of sine is -1 ≤ sine ≤ 1
Thus:
sin 3x = -1/2
⇒ 3x = 2nπ - π/6 or 2nπ - 5π/6
⇒ x = 2/3nπ -π/18 or 2/3nπ -5π/18
What else can I help you with?
What will be the answer of equation 3 plus 3x3-3 plus 3 equals?
12
How do you factor 3x3-3x2-48x-60 equals 0?
3x3 -3x2 - 48x - 60 = 0 simply factor out a 3... 3(x3 - x2 - 16x - 20) = 0
What is -3x3 plus 6x2 plus 6x plus 9 equals?
One-houndred and thirty five.
14-2X equals 3X plus 11 what is X?
A Letter.14-2x=3x+113-2x=3x3=5xX=0.6
What is the positive and negative real roots of 3x3 x2-8x-12?
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals", "squared", "cubed" etc. Please use "brackets" (or parentheses) because it is impossible to work out whether x plus y squared is x + y2 of (x + y)2. There is no operator between 3x3 and x2 (which I assume are 3x-cubed and x-squared).
Is 12 3x3?
No, 12 is not equal to 3x3. The expression 3x3 represents the multiplication of two numbers, 3 and 3, which equals 9. However, 12 is a separate number that is equal to 4x3 or 6x2. In mathematical terms, 12 is not equivalent to 3x3.
What multipcation fact equals to nine?
1x9:9 3x3:9
3 yards equals to what?
3 feet equals 1 yard. So 3x3=9.9 ft
What will be the answer of equation 3 plus 3x3-3 plus 3 equals?
12
How many corfficients does -3x3 plus x2 plus 17 plus 6x4 have?
- 3X3 + X2 + 17 + 6X4Three. I will put the coefficients in parentheses.(- 3 )X3 + (1)X2 + 17 + (6)X4=========================( remember, 1 is always an implied coefficient )
What is a 2 step equation that equals 9?
it is 3x3 not that hard
How do you factor 3x3-3x2-48x-60 equals 0?
3x3 -3x2 - 48x - 60 = 0 simply factor out a 3... 3(x3 - x2 - 16x - 20) = 0
What is -3x3 plus 6x2 plus 6x plus 9 equals?
One-houndred and thirty five.
What is 3 with the power of 2?
3 to the power of 2 is the same as saying 3x3, which equals 9. (The answer is 9.)
3x3=9?
y
What is 9 as a product of primes?
3x3
Does 3x3 equal a square foot?
No.However, the dimensions 3 feet by 3 feet = 9 square feet, and that equals a square yard.
