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(1 point) f(az +by), ie the RHS is a inear function of z and y We...
(1 point) The equation z2 can be written in the form y'-f(y/z), ie., it is homogeneous,...
(1 point) The equation z2 can be written in the form y'-f(y/z), ie., it is homogeneous, so we can use the substitution u-y/z to obtain a separable equation with dependent variable Introducing this substitution and using the fact that y' zuu we can write (*) as u u- f(u) where f(u) Separating variables we can write the equation in the form dz where g(u)- An implicit general solution with dependent variable u can be written in the form In(z) Transforming...
(1 point) The equation 3ry2r 2y2 (*) can be written in the form y f(y/x), ie.,...
(1 point) The equation 3ry2r 2y2 (*) can be written in the form y f(y/x), ie., it is homogeneous, so we can use the substitution u = y/x to obtain a separable equation with dependent variable uu(x. Introducing this substitution and using the fact that y' ru' u we can write () as y xu'w = f(u) where f(u) Separating variables we can write the equation in the form da np (n)6 where g(u) = An implicit general solution with...
(1 point) Given a second order inear homogeneous differential equation az(x) + we know that a...
(1 point) Given a second order inear homogeneous differential equation az(x) + we know that a fundamental set for this ODE consists of a pair nearly ndependent solutions . linearly independent solution We can find using the method et reduction of (2) + Golly=0 But there are times when only one functional and we would e nd a con First under the necessary assumption the a, (2) we rewrite the equation as * +++ (2) - Plz) - ) Then...
4 points) Write the equation in the form y-f(u/z) then use the substitution y zu to...
4 points) Write the equation in the form y-f(u/z) then use the substitution y zu to find an implicit general solution. Then solve the initial value problem. The resulting differential equation in z and u can be written as zu' Separating variables we arrive at Separating variables and and simplifying the solution can be written in the form u2 1-Cf(x) where C is an arbitrary constant and which is separable. da du f(x) ias problem is
The equation 4zy + z² + y2 4y can be written in the form y =...
The equation 4zy + z² + y2 4y can be written in the form y = f(y/2). Le it is homogeneous so we can use the substitution y/z to obtain a separable equation with dependent variable u = Introducing this substitution and using the fact that y zu' + u we can write (.) as y = Du' +u = f(u) where f(u) Separating variables we can write the equation in the form dr g(u) du I where g(u) An...
Problem 1 Let gi(x, y, z)-y, 92(x, y, z)z and f(x, y, z) is a differential function We introduce ...
Problem 1 Let gi(x, y, z)-y, 92(x, y, z)z and f(x, y, z) is a differential function We introduce F(x, y, z, A, )-f(x, y, z) - Xgi(x, y, z) - Hg2(x, y, 2). ·Show that the Lagrange system for the critical points off with constraints gi (x, y, z) = 92(x,y, z)0: F(zo, yo, 20, λο, μο)-(0, 0, 0, 0, 0) is equivalent to the one-dimensional critical point equation: df dr(ro, 0, 0) = 0, 30 = 20 =...
The equation y' 6x2 + 3y2 ту can be written in the form y' = f(y/x),...
The equation y' 6x2 + 3y2 ту can be written in the form y' = f(y/x), i.e., it is homogeneous, so we can use the substitution u = y/x to obtain a separable equation with dependent variable u= u(x). Introducing this substitution and using the fact that y' = ru' + u we can write (*) as y' = xu'+u = f(u) where f(u) = Separating variables we can write the equation in the form dr g(u) du = where...
(1 point In general for a non-homogeneous problem y' + p(x) +(z) = f() assume that...
(1 point In general for a non-homogeneous problem y' + p(x) +(z) = f() assume that y. is a fundamental set of solutions for the homogeneous problemy" p(x) + (2) 0. Then the formula for the particular solution using the method of variation of parameters is where (z)/ and ()/() where W() is the Wronskian given by the determinant W (2) (2) W2) 31(2)/(2) dr. NOTE When evaluating these indefinite integrals we take the W(2) So we have the de...
Observe that the point (1,1,1) satisfies the equation 2. Although we may not be able to write down a formula for z in terms of x and y there is a function z(x,y) that has continuous partial derivativ...
Observe that the point (1,1,1) satisfies the equation 2. Although we may not be able to write down a formula for z in terms of x and y there is a function z(x,y) that has continuous partial derivatives, is defined for (x,y) near (1,1), and for which z(1,1)-1. For this function find the values of the partials дг/дх (1,1) and дг/ду (1,1). Use this to approximate z(1.1 ,.9). Finally, find az/0x (1,1). If we try to do similar calculations for...
QUESTION 5 (5.1) Compute the Fourer cosine series for the function (5) 0 те (-т, т/2) f(+) 3D {1 z€ |-п/2, т/2] 0 те (т...
QUESTION 5 (5.1) Compute the Fourer cosine series for the function (5) 0 те (-т, т/2) f(+) 3D {1 z€ |-п/2, т/2] 0 те (т/2, т) on the mterval (-T,7T) (5.2) Use separation of varables to find a solution of the partial differential equation (7) ди ди =0, on z, y € (0, со), with boundarу value u(z, 1) - e(1-2)/z [12
QUESTION 5 (5.1) Compute the Fourer cosine series for the function (5) 0 те (-т, т/2) f(+) 3D...
(1 point) The equation z2 can be written in the form y'-f(y/z), ie., it is homogeneous, so we can use the substitution u-y/z to obtain a separable equation with dependent variable Introducing this substitution and using the fact that y' zuu we can write (*) as u u- f(u) where f(u) Separating variables we can write the equation in the form dz where g(u)- An implicit general solution with dependent variable u can be written in the form In(z) Transforming...
(1 point) The equation 3ry2r 2y2 (*) can be written in the form y f(y/x), ie., it is homogeneous, so we can use the substitution u = y/x to obtain a separable equation with dependent variable uu(x. Introducing this substitution and using the fact that y' ru' u we can write () as y xu'w = f(u) where f(u) Separating variables we can write the equation in the form da np (n)6 where g(u) = An implicit general solution with...
(1 point) Given a second order inear homogeneous differential equation az(x) + we know that a fundamental set for this ODE consists of a pair nearly ndependent solutions . linearly independent solution We can find using the method et reduction of (2) + Golly=0 But there are times when only one functional and we would e nd a con First under the necessary assumption the a, (2) we rewrite the equation as * +++ (2) - Plz) - ) Then...
4 points) Write the equation in the form y-f(u/z) then use the substitution y zu to find an implicit general solution. Then solve the initial value problem. The resulting differential equation in z and u can be written as zu' Separating variables we arrive at Separating variables and and simplifying the solution can be written in the form u2 1-Cf(x) where C is an arbitrary constant and which is separable. da du f(x) ias problem is
The equation 4zy + z² + y2 4y can be written in the form y = f(y/2). Le it is homogeneous so we can use the substitution y/z to obtain a separable equation with dependent variable u = Introducing this substitution and using the fact that y zu' + u we can write (.) as y = Du' +u = f(u) where f(u) Separating variables we can write the equation in the form dr g(u) du I where g(u) An...
Problem 1 Let gi(x, y, z)-y, 92(x, y, z)z and f(x, y, z) is a differential function We introduce F(x, y, z, A, )-f(x, y, z) - Xgi(x, y, z) - Hg2(x, y, 2). ·Show that the Lagrange system for the critical points off with constraints gi (x, y, z) = 92(x,y, z)0: F(zo, yo, 20, λο, μο)-(0, 0, 0, 0, 0) is equivalent to the one-dimensional critical point equation: df dr(ro, 0, 0) = 0, 30 = 20 =...
The equation y' 6x2 + 3y2 ту can be written in the form y' = f(y/x), i.e., it is homogeneous, so we can use the substitution u = y/x to obtain a separable equation with dependent variable u= u(x). Introducing this substitution and using the fact that y' = ru' + u we can write (*) as y' = xu'+u = f(u) where f(u) = Separating variables we can write the equation in the form dr g(u) du = where...
(1 point In general for a non-homogeneous problem y' + p(x) +(z) = f() assume that y. is a fundamental set of solutions for the homogeneous problemy" p(x) + (2) 0. Then the formula for the particular solution using the method of variation of parameters is where (z)/ and ()/() where W() is the Wronskian given by the determinant W (2) (2) W2) 31(2)/(2) dr. NOTE When evaluating these indefinite integrals we take the W(2) So we have the de...
Observe that the point (1,1,1) satisfies the equation 2. Although we may not be able to write down a formula for z in terms of x and y there is a function z(x,y) that has continuous partial derivatives, is defined for (x,y) near (1,1), and for which z(1,1)-1. For this function find the values of the partials дг/дх (1,1) and дг/ду (1,1). Use this to approximate z(1.1 ,.9). Finally, find az/0x (1,1). If we try to do similar calculations for...
QUESTION 5 (5.1) Compute the Fourer cosine series for the function (5) 0 те (-т, т/2) f(+) 3D {1 z€ |-п/2, т/2] 0 те (т/2, т) on the mterval (-T,7T) (5.2) Use separation of varables to find a solution of the partial differential equation (7) ди ди =0, on z, y € (0, со), with boundarу value u(z, 1) - e(1-2)/z [12
QUESTION 5 (5.1) Compute the Fourer cosine series for the function (5) 0 те (-т, т/2) f(+) 3D...
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