1.

`(dy)/(dx)` ज्ञात कीजिए| `x=2at^(2),y=at^(4)`

Answer» `x=2at^(2)" "y=at^(4)`
`(dx)/(dt)=4at" "rArr (dy)/(dt)=4at^(3)`
`therefore" "(dy)/(dx)=(dy//dt)/(dx//dt)=(4a^(3))/(4at)=t^(2)`


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