If m1and m2 are the roots of the auxiliary equation of the given linea...
The auxiliary equation is given by
a
0D
2 + a
1D + a
2 = 0 .....(i)
Its roots are given by
Clearly,
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If m1and m2 are the roots of the auxiliary equation of the given linea...
The given linear differential equation of second order with constant coefficients can be written as:
a(d^2y/dx^2) + b(dy/dx) + cy = 0
where a, b, and c are constants.
The auxiliary equation for this differential equation is obtained by assuming a solution of the form y = e^(mx), where m is a constant. Substituting this into the differential equation, we get:
a(m^2e^(mx)) + b(me^(mx)) + ce^(mx) = 0
Simplifying this equation gives us the auxiliary equation:
am^2 + bm + c = 0
This is a quadratic equation in m, and its roots m1 and m2 are the solutions to the auxiliary equation.
Now let's go through each option to determine which one is correct:
a) m1 and m2 are always real and distinct:
This is not always true. The roots of the auxiliary equation can be real and distinct, but they can also be complex or equal. So option a is incorrect.
b) m1 and m2 are always complex:
This is also not always true. The roots of the auxiliary equation can be real or complex. So option b is incorrect.
c) m1 and m2 both may be complex and equal:
This is true. The roots of the auxiliary equation can be complex and equal. For example, if the quadratic equation has a discriminant of zero, then the roots will be complex and equal. So option c is correct.
d) m1 and m2 both may be real and equal, real and distinct, or complex:
This is also true. The roots of the auxiliary equation can be real and equal, real and distinct, or complex. So option d is correct.
In conclusion, the correct answer is option d. The roots m1 and m2 of the auxiliary equation can be real and equal, real and distinct, or complex.
If m1and m2 are the roots of the auxiliary equation of the given linea...
The auxiliary equation is given by
a
0D
2 + a
1D + a
2 = 0 .....(i)
Its roots are given by
Clearly,