Differential Equations Answers

1. (y − 2)dx − (x − y − 1)dy = 0

Complete solution of d^2y/dx^2 +2dy/dx +y=sin 2x

Complete solution of d^2y/dx^2 + 4y = cos 4x

Solve the full problem

X²u_xx +2xyu_xy+u_yy=u

solve: dx/(y^2 + z^2) = dy/-xy = dz/ -xz

Find the general solution of differential equation (d^2-4d+2)y=0

Dx/y^2+z^2=dy/-xy=dz/-xz

Q.4.7 Jack wishes to purchase a new cell phone. He is required to pay a deposit of 15%of the full price of the cell phone. If the deposit amount is R1 200, what is the fullprice of the cell phone?

X²u_xx +2xyu_xy+u_yy=u

(x^2-y^2 -zy)p +(x^2-y^2-zx)q =z(x-y)