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Step by step text solution for If the sum of 1st M terms of an AP is m. and the sum of 1st N terms is n, show that- the 1st term of this AP is (mN(N-1)-nM(M-1))/(MN(N-M)) by MATHS experts to help you in doubts & scoring excellent marks in Class 11 exams.
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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 7-EXERCISE
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- Show that the four lines 2x+y+1=0,2x+y+7=0,x+2y-1=0 and x+2y+5=0 form ...
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- The co-ordinate of centre and the diameter of a circle are (3, 7) and ...
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- Find the ratio in which the YZ. plane divides the line segment joining...
03:34
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- Evaluate :lim(xrarr0)(sqrtcosx-root(3)(cosx))/(sin^2x)
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05:00
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- Using contrapositive method show that the following statement is true....
02:07
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- Find the validity of the following biconditional Statement. A triangle...
01:11
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- For any three events A. B.' C show thatP(AcupBcupC)=P(A)+P(B)+P(C)-P(A...
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- The mean and SD of the scoreing marks of 100 students are 40 and 5.1 r...
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- if tan (beta/2)=4 tan (alpha/2),show that tan( (beta-alpha)/2)=(3sinal...
03:38
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- If xcos(theta+120^@)=y cos (theta+240^@),show that x-y=-(x+y)sqrt3tant...
05:32
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- If one root is the square of another of an equationax^2+2ibx+ic=0,then...
06:41
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- If the sum of 1st M terms of an AP is m. and the sum of 1st N terms is...
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- Exhibit graphically the solution region of the following system of 'in...
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- Find the equation of an ellipse having eccentricity 2/3 and the co-ord...
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