IIT JAM
Rajat jain Asked a Question
May 21, 2020 11:40 ampts 30 pts
  • IIT JAM
  • Mathematics (MA)

Among the following which are the de of first order and first degree dy = f(x, y) m(x, y)dx+ n(x, y)dy = 0 (b) (a) dx dx (d) xm(x, y)dx + yn(x, y)dy = 0 (c) f(x

Among the following which are the DE of first order and first degree dy = f(x, y) M(x, y)dx+ N(x, y)dy = 0 (B) (A) dx dx (D) xM(x, y)dx + yN(x, y)dy = 0 (C) f(x, y) dy iaa are exact differentials?
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  • Priyadarshan Choursiya Best Answer
    see attachment
    • cropped4219616542342174393.jpg
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  • Dhairya sharma
    also 1
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  • Dhairya sharma
    according to 1 order and 1 degree option 3 is also correct.
    • cropped6000686350334730251.jpg
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    Rajat jain
    no in book first and second are given correct
  • Dhairya sharma
    see attached.
    • cropped7232580331772868800.jpg
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  • Dhairya sharma
    ans is b. dear it's a condition of DE to be an exact that Mdx + Ndy =0
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    Rajat jain
    an other option is also correct