[" 9.If "(x)/(a)+(y)/(b)=2" touches the ...

[" 9.If "(x)/(a)+(y)/(b)=2" touches the curve "(x^(n))/(a^(n))+(y^(n))/(b^(n))=2" at the point "(alpha,beta)" ,then "],[[" (a) "alpha=a^(2),beta=b^(2)," (b) "alpha=a,beta=b],[" (c) "alpha=-2a,beta=4b," (d) "alpha=3a,beta=-2b]]

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