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Let X = {11, 12, 13, … , 40, 41} and Y =...

Let X = {11, 12, 13, … , 40, 41} and Y = {61, 62, 63, … 90 , 91} be the two sets of observaztion. If `overlinex` and `overliney` are their respective means and `sigma^2` is the variance of all the observations is X`uu` Y, then `|overlinex+overliney-sigma^2| ` is equal to ………..

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JEE MAINS PREVIOUS YEAR-JEE MAINS 2023 JAN ACTUAL PAPER-Question
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  2. A triangle is formed by the tangents at the point (2, 2) on the curves...

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  3. Let X = {11, 12, 13, … , 40, 41} and Y = {61, 62, 63, … 90 , 91} be th...

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  4. If the equation of the normal to the curve y = (x-a)/((x+b)(x-2) at th...

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  6. Let {ak} and {bk},k epsilon N, be two G.P.s with common ratios r1 and ...

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  7. A circle with centre (2,3) and radius 4 intersects the line x + y = 3 ...

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  8. Let alpha1,alpha2,........alpha7 be the roots of the equation x^7+3x^5...

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  9. Let f(x)=2x+tan^(-1)x and g(x)=log(e)(x+sqrt(1+x^(2))),x in[0,3].Then

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  11. The shortest distance between the lines (x-5)/(1)=(y-2)/(2)=(z-4)/(-3...

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  12. The sum to 10 terms of the series (1)/(1+1^(2)+1^(4))+(2)/(1+2^(2)+2^...

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  13. Let S={x:x in IR and (sqrt(3)+sqrt(2))^(x^(2)-4)+(sqrt(3)-sqrt(2))^(x^...

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  14. The mean and variance of 5 observations are 5 and 8 respectively. If 3...

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  15. Let S be the set of all solutions of the equation cos^(-1)(2x)-2cos^(-...

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