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y^(')=2x+3y-1
Is 
y=-(2)/(3)x+(1)/(9) a solution to the above equation?
Choose 1 answer:
(A) Yes
(B) No

y=2x+3y1 y^{\prime}=2 x+3 y-1 \newlineIs y=23x+19 y=-\frac{2}{3} x+\frac{1}{9} a solution to the above equation?\newlineChoose 11 answer:\newline(A) Yes\newline(B) No

Full solution

Q. y=2x+3y1 y^{\prime}=2 x+3 y-1 \newlineIs y=23x+19 y=-\frac{2}{3} x+\frac{1}{9} a solution to the above equation?\newlineChoose 11 answer:\newline(A) Yes\newline(B) No
  1. Given Differential Equation: Given the differential equation y=2x+3y1y'=2x+3y-1, we need to check if the function y=23x+19y=-\frac{2}{3}x+\frac{1}{9} is a solution. To do this, we will first find the derivative of yy with respect to xx, which we denote as yy'.
  2. Find Derivative of y: The derivative of yy with respect to xx is found by differentiating each term of y=23x+19y=-\frac{2}{3}x+\frac{1}{9} with respect to xx. The derivative of 23x-\frac{2}{3}x with respect to xx is 23-\frac{2}{3}, and the derivative of a constant, 19\frac{1}{9}, is 00. Therefore, y=23y' = -\frac{2}{3}.
  3. Substitute yy and yy': Now we will substitute yy and yy' into the given differential equation to see if it holds true. Substituting y=23y' = -\frac{2}{3} and y=23x+19y = -\frac{2}{3}x + \frac{1}{9} into the differential equation y=2x+3y1y'=2x+3y-1 gives us: 23=2x+3(23x+19)1-\frac{2}{3} = 2x + 3\left(-\frac{2}{3}x + \frac{1}{9}\right) - 1.
  4. Simplify Right Side: We simplify the right side of the equation: 2x+3(23x+19)12x + 3\left(-\frac{2}{3}x + \frac{1}{9}\right) - 1 becomes 2x2x+1312x - 2x + \frac{1}{3} - 1. The terms 2x2x and 2x-2x cancel each other out, leaving us with 131\frac{1}{3} - 1.
  5. Further Simplify: Further simplifying 131\frac{1}{3} - 1 gives us 23-\frac{2}{3}. So the right side of the equation simplifies to 23-\frac{2}{3}, which is equal to the left side, yy', which we found to be 23-\frac{2}{3}.
  6. Verify Solution: Since both sides of the equation are equal, the function y=23x+19y=-\frac{2}{3}x+\frac{1}{9} satisfies the differential equation y=2x+3y1y'=2x+3y-1. Therefore, y=23x+19y=-\frac{2}{3}x+\frac{1}{9} is indeed a solution to the differential equation.

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