## Question

###### Find all intervals on which the differential equations shown below are normal: (a) Vxy" +13xy' _ Iy= In(x? _100) (b) (I+x )y"+xy"-xyty=0 (c) x -e2 (Ingxl - 2lne)y + (cschx)y = 0

Find all intervals on which the differential equations shown below are normal: (a) Vxy" +13xy' _ Iy= In(x? _100) (b) (I+x )y"+xy"-xyty=0 (c) x -e2 (Ingxl - 2lne)y + (cschx)y = 0

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