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Syllabus

sinx+sin2x+sin3x+...+sin nx=sin((n+1)/2)x .((sin nx)/2) / sin(x/2)

Prove that 1.2 + 2.3 + 3.4 +..............n(n+1) = 1/3 n (n+1)(n+2)

1^4+2^4+3^4+..........+n^4 =n(n+1)(2n+1)+(3n^2+3n-1)/30. (whole divided by 30)

sinx + sin3x + ..............+ sin(2n-1)x = sin^2 nx / sinx

prove by PMI

prove by using PMI that 4 raise to n + 15n - 1 is divisible by 9 .

Prove that 2.7n + 3.5n - 5 is divisible by 24 for all n belongs to N. [ please explain with steps]

Prove that x

^{2n}-y^{2n}is divisible by x+y?Prove that n(n+1)(n+5) is a multiple of 3

Prove by PMI

1) a+(a+d)+(a+2d)+ ......[a+(n-1)d] = n/2 [2a+(n-1)d], n E N.

2) n(n+1)(n+5) is divisible by 6 for all n E N.

3) 9 raised to n - 8n - 1 is a multiple of 64 for all n E N.

prove by ibduction that the sum Sn=n

^{3}+3n^{2}+5n+3 is divisible by 3 for all nENProve that n(n+1)(n+2) is divisible by 6

prove that 1x2 + 2x2^2 + 3x2^3+..+nx2^n = (n-1)x2^n+1 +2

Using PMI Prove that 1^2 + 2^2 + ......... + n^2 n^3/3

using induction, prove that 10

^{n }+ 3.4^{n+2}+ 5 is divisible by 9^{n-1}x) = sin 2^{x}a/ 2^{x}sin a^{2n}+ 2^{3n-3}, 3^{n-1}is divisible by 25, for all n Ꜫ N.find the equation of parabola whose focus is (1,1) and tangent at the vertex is x + y = 1

bY PMI prove n(n+1)(2n+1) is divisible by 6

Prove that 11

^{n+2 }+ 12^{2n+1 }is divisible by 133 for all n belongs to N .Prove: 5

^{2n}-1 is divisible by 24 for all n N3x+6x+9x .................... to n terms = 3/2n(n+1)x

Using PMI, prove that

5

^{2n+2}-24n-25 is divisible by 576 for n belongs to N.Prove the following

1.3 + 3.5 + 5.7 + ..... +(2n - 1) (2n + 1 ) =n( 4n square + 6n -1)/2 plz explain briefly in a simple method

13. Prove that, 5

^{n}- 5 is divisible by 4 for all n $\in $ N.using principle of mathematical induction prove that, 1

^{2}+ 2^{2}+....+ n^{2}(n^{3}/3) for all n belonging to natural numbersQ. Prove that 1.3+2.4+3.5+....+n(n+2) = 1/6n (n+1) (2n+7),

~~V~~nEN.using PMI, prove that

1 x 3 + 3 x 5 + 5 x 7 + ........ = n (4n

^{2 }+ 6n -1) / 3how to split a cubic polynomial like k

^{3}+6k^{2}+9k+4??using mathematical induction

prove that

7+ 77+ 777+ ..............+ 77.........7 = 7/81 (10to the power n+1 -9n-10)

Prove that 2.7

^{n}+ 3.5^{n}-5 is divisible by 24, for all n belongs to N....Plzzz dnt tell to refer textbook as frm dat also its not clear to me plzzzzzz answer it as soon as possible.....7 divides 2

^{3n}-1Prove by induction:

1/1.2 + 1/2.3 + 1/3.4 + ..... to n terms = n/(n+1)

^{5}/5+n^{3}/3+7n/15 is a natural number by using the principle of mathematical induction.1 / 1.2.3 + 1 / 2.3.4 + 1 / 3.4.5 + …….. + 1 / n (n+1) (n+2) = n (n+3) / 4 (n+1) (n+2) ? using principle of mathematical induction prove the following for all n E N ?

Prove that n

^{2}+ n is even , where n is natural number.?^{2}+ ...... + ar^{n-1}= a(r^{n}-1)/r-1 prove this by PMI .3.6 +6.9+9.12+....+3n(3n+3) = 3n(n+1) (n+2)

in drilling worlds deepest hole it was found that the temperature T in degree celcius at x km below the surface of the earth was =30+25(x - 3), 3 less than x less than 15. at what depth will the temperature lie b/w 200

^{o}C and 300^{o}C.Using principle of mathematical induction prove;

1+1/4+1/9+1/16...+1/1n^2

1/2*5+ 1/5*8 + 1/8*11 +.......................+

1/(3n-1)(3n+2)

= n/6n+4

prove by PMI

^{2n-1}+ 1 is divisible by 16 .Hi

By using principle of mathematical induction, prove that for all n element of N:

3^2n+2 - 8n - 9 is divisible by 64.

prove that 7

^{2n}+23^{3n-3}*3^{n-1}is divisible by 25 for all natural numbers n... plz say hw to do it..5+15+45....+5.3

^{n-1}= 5/2(3^{n-1})1+4+7+---------+(3n-2)=

1n(3n-1)2

By Principle of Mathematical Induction, prove that:

12

^{n}+ 2.5^{n-1}is divisible by 7.

Prove by PMI

n(n+1)(n+5) is divisible by 6 for all n belongs to natural numbers

if P(n) is the statement"2power n=3n ,and if P(r) is true,prove that P(r+1) is true.

11 power n+2 + 12 power 2n+1 is divisible by 133

42) Find the equations of bisectors of the internal angles of the triangles, the equations of whose sides are x + 1 = 0, 3x - 4y - 5 = 0 and 5x + 12y - 27 = 0. Also, find the co-ordinates of incentre.

Prove that

^{ 1}/_{2 }tan (^{x}/_{2})+^{1}/_{4}tan(^{x}/_{4})+...+(^{1}/_{2n})tan (^{x}/_{2n})=(^{1}/_{2n})cot(^{x}/_{2}^{n}) - cotx for all n (- N and 0<x<(^{pi}/_{2}).please solve.... n(n2-1) is divisible by 24,where n is an odd integer

Prove by induction that (2n+7)<(n+3)

^{2}is true^{2}+2^{2}.3^{3}+2^{3}.3^{4}+… +2^{n}.3^{n+1}= 18/5 (6^{n}-1) by the principle of mathematical induction for every nєN.using mathematical induction prove that

n(n+1)(n+2) is divisible by 6.what is principle of mathamatical induction

http://screencast.com/t/xJ89aT53w

7

^{n}-3^{n}is a divisible by 4.please solve this

1. X

^{2n-1}+y^{2n-1 }is divisible by x+y for all nNPROVE BY M.I (41)

^{n}-(14) is multiple of 27Prove the following by using the principle of mathematical induction for all

(2

n+7) < (n+ 3)^{2 }can any pls explain this question in detail??? cuz i can't get it

23. Prove a polygon of n sides has $\frac{n(n-3)}{2}diagonals.n3.$

prove that 2

^{n}is greater than n for all positive integers n.this is example 2 from the ncert maths text book.

plzz...answer soon....i dint get the last step.