1. The given differential equation is: y dx - x dy = 0 This is a first-order linear differential equation. We can rewrite it as: y dx = x dy Now, divide both sides by x and y: (dx/x) = (dy/y) This is a separable differential equation, meaning we can integrate both sides separately. Integrating both sidRead more

    The given differential equation is:

    y dx – x dy = 0

    This is a first-order linear differential equation. We can rewrite it as:

    y dx = x dy

    Now, divide both sides by x and y:

    (dx/x) = (dy/y)

    This is a separable differential equation, meaning we can integrate both sides separately.

    Integrating both sides:

    ∫(1/x) dx = ∫(1/y) dy

    The integrals of 1/x and 1/y are:

    ln|x| = ln|y| + C

    Now, take both sides as exponents to get rid of the logarithms:

    x = C y

    Therefore, the general solution is:

    y = cx

    where c is a constant.

    So, the right answer is y = cx.

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  2. The given differential equation is as follows: d/dx ((dy/dx)³) We will break it down step by step to find the order and degree of the differential equation. Order: The order of a differential equation is the highest derivative of the unknown function in the equation, which in this case is y. In theRead more

    The given differential equation is as follows:

    d/dx ((dy/dx)³)

    We will break it down step by step to find the order and degree of the differential equation.

    Order: The order of a differential equation is the highest derivative of the unknown function in the equation, which in this case is y.

    In the expression d/dx ((dy/dx)³), we differ_intiate the third power of the first derivative, dy/dx. Therefore, the highest order in the expression is the second derivative of y, that is, d²y/dx² .

    Thus, the order is 2 .

    Degree: The degree of a differential equation is the exponent of the highest-order derivative, provided the equation is polynomial in the derivatives.

    Here the highest-order derivative is (dy/dx)² (occurs after differentiation), the degree of the equation is 1 because the expression (dy/dx)³ is raised to the first power (after differentiation).

    Hence, the degree is 1.

    Sum of the order and degree: The sum of the order and the degree is:

    Order + Degree = 2 + 1 = 3

    Hence, the answer is 3.

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  3. The differential equation given is: d²y/dx² + (dy/dx)^(1/4) + x^(1/5) = 0 Order: The order of a differential equation is the highest derivative of the unknown function, which, in this case, is y. The highest derivative of the given equation is d²y/dx², the second derivative of y with respect to x. SRead more

    The differential equation given is:
    d²y/dx² + (dy/dx)^(1/4) + x^(1/5) = 0

    Order: The order of a differential equation is the highest derivative of the unknown function, which, in this case, is y.
    The highest derivative of the given equation is d²y/dx², the second derivative of y with respect to x. So, the order is 2.

    Degree: The degree of a differential equation is the exponent of the highest-order derivative, provided the equation is polynomial in the derivatives.

    To find the degree, we remove the fractional exponent in the term (dy/dx)^(1/4). We will multiply both sides of the equation by 4 to remove the fractional power. The equation becomes a polynomial in derivatives after that, and the highest derivative is d²y/dx², which has an exponent of 2.

    Therefore, the degree is 4.

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  4. The given differential equation is:   2x dy - y dx = 0 Step 1: Rearrange the equation Put the equation into the separable variable form as:   (2x dy) = (y dx)   Now dividing both sides by x and changing,   dy/dx = y / (2x) Step 2: Solution through Separating Variables Write it,   dy/y = dx/(2x) InteRead more

    The given differential equation is:
     
    2x dy – y dx = 0
    Step 1: Rearrange the equation
    Put the equation into the separable variable form as:
     
    (2x dy) = (y dx)
     
    Now dividing both sides by x and changing,
     
    dy/dx = y / (2x)
    Step 2: Solution through Separating Variables
    Write it,
     
    dy/y = dx/(2x)
    Integrating on both sides:
     
    ∫ (1/y) dy = ∫ (1/2x) dx
     
    ln|y| = (1/2) ln|x| + C
    Step 3: Putting into Exponential Form
    Now, taking the exponent on both sides:

    y = e^C * x^(1/2)

    Let e^C = C’, then:

    y = C’ x^(1/2)

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  5. We are given that A is a square matrix of order 2, and |A| = |kA|. We have to compute the sum of all possible values of k. First recall that if A is any square matrix of order 2, then the determinant of kA where k is any scalar is given by |kA| = k² |A| This is because for a 2x2 matrix, multiplicatiRead more

    We are given that A is a square matrix of order 2, and |A| = |kA|. We have to compute the sum of all possible values of k.

    First recall that if A is any square matrix of order 2, then the determinant of kA where k is any scalar is given by
    |kA| = k² |A|

    This is because for a 2×2 matrix, multiplication of the matrix A by scalar k scales the determinant by k².

    We know that |A| = |kA|. Using the above formula, we substitute for the value of |kA|,

    |A| = k² |A|

    If |A| ≠ 0, we can divide both sides by |A| to get,

    1 = k²

    This gives two values for k

    k = 1 or k = -1

    Therefore, the sum of all possible values of k is:

    1 + (-1) = 0

    So, the correct answer is 0.

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