The number of values of ' \( c \) ' such that the straight line \( 3 x+4 y=c \) touches the curv....

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The number of values of ' \( c \) ' such that the straight
\( \mathrm{P} \)
line \( 3 x+4 y=c \) touches the curve \( \frac{x^{4}}{2}=x+y \) is


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