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[" If the tangent at 't' on hte curve "y...

[" If the tangent at 't' on hte curve "y=8t^(3)-1,x=4t^(2)+3" meets the curve again att' and is normal to the curve at that "],[" point,then value of t must be - "],[[" (a) "+-(1)/(sqrt(3))," (b) "(+-1)/(sqrt(2))," (c) "+-(sqrt(2))/(3)," (d) None of these "]]

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