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Question

The largest value of yx such that the pair (x,y) satisfies the equation (x3)2+(y3)2=6is

A
2+22
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B
3+22
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C
22
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D
32
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Solution

The correct option is B 3+22
(x3)2+(y3)2=((6))2
x2+y26x6y+9+96=0
x2+y26x6y+12=0
tanθ=yx tanβ=35=1 β=45
yx=tan(α+β)
OA=(30)2+(30)2=18
OB=(OA)2(AB)2=186
OB=12
tanα=612=12
yx=tan(α+β)=tanα+tanβ1tanαtanβ=1+12112=3+22




1004843_1048875_ans_6464eefd7bc64375b8268c13d137b720.PNG

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