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If (x+y)^(m+n)=x^my^n then dy/dx= (A) ...

If `(x+y)^(m+n)=x^my^n` then `dy/dx=`
(A) `x/y`
(B) `-y/x`
(C) `-x/y`
(D) `y/x`

Answer

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  • If x^(n) y^(n) =(x+y) ^(n),then (dy)/(dx)=

    A
    ` (y^(2))/( x^(2))`
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  • If x^(m)y^(n)=(x+y)^(m+n) , then (dy)/(dx) is

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    `(x)/(y)`
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    `(y)/(x)`
    C
    `(x+y)/(xy)`
    D
    xy

  • If x ^(n) y^(n) =( x+y ) ^(n),then (dy)/(dx)=

    A
    ` (-1)/( (x-1)^(2))`
    B
    ` (1)/( ( x-1)^(2))`
    C
    ` (-x)/( (x-1)^(2))`
    D
    ` (x)/( ( x-1)^(2))`

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