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What is terms?

Posted by Chandan Jha 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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if |Z1+z2|=|z1-Z2| then value of ampZ1-ampZ2

Posted by Ayush Ranjan 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Find the centre and radius of the circle x^2+y^2-x+2y-3=0

Posted by Vishnu Darsan 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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In any triangle ABC prove that a square minus b square Court God she square is equal

Posted by Gaurav Mukesh 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Using principle of mathematical induction prove 2.7^n+3.5^n-5 is divisible by 24

Posted by Ayush Bansal 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Limx->2 (x^5 - 32/x^3 - 8)

Posted by Abhishek Mishra 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Chandrashekhar Wankhede 7 years, 10 months ago

Divide numerator and denominator of given function by (x-2) . Use standard limit for numerator as well as denominator , Lim x-->a ( X power n - a power n) /(x-a) = n * (a power (n-1))

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How to prepared maths for final exam...

Posted by Bhupendra Singh 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Lim x->pie/2 tan2x/x-pie/2

Posted by Abhishek Mishra 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Piyush Singh 7 years, 10 months ago

Tan 2/x-pie/2 =π/2

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How solve straight line miscellaneous 15 to 18

Posted by Moti Kumari 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Chandrashekhar Wankhede 7 years, 10 months ago

Pl post questions..

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If tan(πcosQ)=cot(πsinQ),then find the value of cos(π-π\4)

Posted by Hardev Pandey 7 years, 10 months ago

CBSE > Class 11 > Mathematics

2 answers

Piyush Singh 7 years, 10 months ago

Sin/cos (πcosQ)=cos/sin(πsinQ)

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Chandrashekhar Wankhede 7 years, 10 months ago

cos (pi-pi/4)= cos (135)= - cos (45) = - (1/root 2)

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Npr=720 and ncr =120 .find r

Posted by Harsh Tejan 7 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Chandrashekhar Wankhede 7 years, 10 months ago

ncr= npr / r! 120 = 720 / r! r! = 720 / 120 = 6 = 3*2*1 = 3! r = 3

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sinA+sinB

Posted by Sanjay Verma 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Chirag Bhardwaj 7 years, 10 months ago

2sinA+B/2cosA-B/2

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A+b

Posted by Mohit Mohit 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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find the equation of the circle which passes through the centre of the circle x square plus y square + 8 x + 10 Y - 7 equal to zero and is concentric with the circle 2 X square + 2 Y square minus 8 x minus 12 minus 9 equal to zero

Posted by Vaibhav Malhotra 7 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Chandrashekhar Wankhede 7 years, 10 months ago

General eqn of circle is sqr(x) + sqr(y) + 2gx + 2fy + c = 0 , center = ( -g , - f) , Find the center of both given circles by comparing their eqn with general eqn. Before comparing second eqn, modify second eqn by dividing it by 2. Find the distance between both centers. This distance will be radius of required circle. Center of required circle will be same as center of second equation. Find equation of required circle by using sqr(X - x1) + sqr (Y - y1) = Sqr (radius), where (x1, y1) is center of second given circle..

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Prove the bionomial theorem with any positive integer

Posted by Ganeiz Xtri 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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If A=[_1,1)

Posted by Ganeiz Xtri 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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To prove (Cos8ACos5A-Cos12ACos9A/Sin8ACos5A+Cos12ASin9A=Tan4A)

Posted by Mayank Verma 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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a+b+c is not equals to zero and (b+c)÷a,(c+a)÷b,(a+b)÷c are in A.P.Prove that 1÷a,1÷b,1÷c are also in A.P

Posted by Poulomi Chowdhury 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Find the equation of line makes an angle of 45 degree line x-y+5=0 and passing through the point(2,-2)

Posted by Chetan Wagadre 7 years, 10 months ago

CBSE > Class 11 > Mathematics

2 answers

Chandrashekhar Wankhede 7 years, 10 months ago

There are will be two lines passing through (2,-2) and making angle of 45 degree with given line x - y +5 = 0 forming diagram of isosceles triangle. slope of given line = tan theta = 1 , that means it is making an angle of 45 degree with positive X axis in anticlockwise direction. The first line passing through (2,-2) which is making 45 with given line will be parallel to X axis and it's equation will be Y = - 2. Other line will be parallel to Y axis and it's equation will be X = 2

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Chirag Bhardwaj 7 years, 10 months ago

x-y=4

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Prove that 3^1/2×3^1/4×3^1/8.....=3

Posted by Anuj Kumar 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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How can we download these maths videos to offline

Posted by Rakesh Kumar 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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(1+x)²

Posted by Vikash Jandu 7 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Mansi Gupta 7 years, 10 months ago

(X+1)^2=(x+1)(x+1)=x=-1,-1

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34Cr-2=34C2r-2 find r

Posted by Naman Thakur 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Divyanshu Gupta 7 years, 10 months ago

r-2+2r-2 =34 r=38/3 r=12.6

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if a,b,c are three sets ,then prove that : a-(b intersection ) = (a-b) union (a-c).

Posted by Harsh Mudgal 7 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Chandrashekhar Wankhede 7 years, 10 months ago

Use Venn diagram or consider some set values for a, b, c

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Find the sum of series (2^2+4^2+6^2+8^2+........to n terms

Posted by Ankit Anand 7 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Chandrashekhar Wankhede 7 years, 10 months ago

nth term of given series = an = square of (2n), Therefore, sn= a1+a2+a3+......+an = 4(sqr(1)+sqr(2)+sqr(3)+......sqr(n)) Using identity , sum of square of n natural numbers = n(n+1)(2n+1)/6 Sn= 4n(n+1)(2n+1)/6

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Find sum 1+4+10+20+35......n terms

Posted by Rahul Bansal 7 years, 10 months ago

CBSE > Class 11 > Mathematics

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Chandrashekhar Wankhede 7 years, 10 months ago

Nth term of this series = an = n(n+1)(n+2)/6 = (1/6) *(cube(n)+ 3*sqr(n)+ 2n). Now sum of all n terms = sum of cubes of first n natural numbers + 3* ( sum of Squares of first n natural numbers + 2 ( sum of first n natural numbers).. Use standard identities of sum of first n natural numbers, sum of squares of first n natural numbers, sum of cubes of first n natural numbers..

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Ishjoyt Alag 7 years, 10 months ago

you can find answer but you have to know n terms formula is n ( n +1)÷2

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Cool K 7 years, 10 months ago

See the ques. Is wronge it is not a A.P. and not an G.P.

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How is conditional implication logically equivalent to contrapositive -with practical example

Posted by Ayaan Firoz 7 years, 10 months ago

CBSE > Class 11 > Mathematics