derivatives 2

IIT JEE 2015 Preparation › Calculus questions › derivatives 2

if x²+y²=t- 1/t and x⁴+y⁴= t²+ 1/t² then find dy/dx

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Mani Pal Singh ·2009-06-09 06:58:34

dude this condition is not possible
so forget about its derivative.
look
u got
x⁴+y⁴+2x²y²= t²+ 1/t²-2
after putting
x⁴+y⁴=t²+ 1/t²

so we have
x²y²=-1
which is not possible[1]

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Anuj ·2009-06-09 07:37:09

hey, in the Q, it should be t+1/t and not minus...

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amitdgr8 ·2009-06-10 05:42:16

no my question is correct

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Lokesh Verma ·2009-06-14 08:52:58

amit can you tell the source of this question, there is definitely something wrong here!

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Anuj ·2009-06-14 08:59:27

bhaiya, its there in R.D. sharma, the exactly same Q, but only with "+" sign....if he doesnt agree, or sm other buk has a misprint, then wt cn ny1 do?

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Basic Integral Calculus Operators Symbols Matrix Cases

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∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

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° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω

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derivatives 2

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