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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 1-EXERCISE
- If the 5th term of the expansion of (x^(2//3)+x^-1)^nis the term indep...
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- Prove that AA n,14^n-13n-1 is divisible by 13.(n in N)
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- Find the distance between the lines 3x+4y=9 and 6x+8y+15=0.
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- Find the ratio in which the plane 2x+3y+5z=1 divides the line segment ...
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- From 1st principle differentiate f(x)=sqrtxwith respect to x.
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- If f(x)=1/x (x!=0),Show that f'(1)-f'(-1)=0.
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- Show that the SD of two variables is half of their optimum value.
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- P(A)=1/2,P(B)=1/3,P(C)=1/4,are these true?when A,B,C are mutually disj...
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- For any two sets,prove that n(Acup B)=n(A)+n(B)-n(AcapB).
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- If cosec theta+sectheta=cosecalpha+secalpha,then show that tan ((theta...
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- Solve :cos^8alpha+sin^8alpha=17/32
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- If x=a+b,y=aw+bw^2,z=aw^2+bw,show that xyz=a^3+b^3
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- If ,p,q,a,b are 6th,7th,8th and 9th term of the expansion of (x+r)^n,t...
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- By using mathematical induction prove that 3^(2n)-8n-1is divisible by ...
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- If a,b,c are in G.P and x,y are the arithmetic mean of a and b aand b,...
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- Prove that the straight lines ax+by+c=0,bx+cy+a=0and cx+ay+b=0 are con...
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- Find the equation of the straight line which divides perepndicularly t...
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- If the image of the co-ordinate of a point (x1,y1)is (x2,y2)with respe...
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- 3x+y=5 and x+y-1=0 are the equations of two diamters to the circle,whi...
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- Evaluate :lim(xrarr1)(x+x^2+x^3+...+x^n-n)/(x-1)
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