Problem 2-5 Solve by finding an integrating factor: 1.20ydxyx dy2.220xdxyxydy3.322230xx y dyyx ydx4.320xy dxxdy5.The equation20xy dxfx dyis known to have an integrating factor Ixx. Find all possibilities forf. 6.Using Eqs. (59) through (62), find integrating factors and solve: a. 10xdyyxy dxb. /2/20y xy xxex y dyyedx7.Show that the equation 0pqxydxxdyyydxxdyhas integrating factor of the form mnx yprovided that 0. 8.Show that the differential equation 2230yx dxx dydoes not have an integrating
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