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Engineering
4 Views   |   2 days, 10 hours ago

The options are wrong right. if not explain.

Engineering
7 Views   |   3 days, 1 hour ago

Let f_{k}\left ( x \right )= \frac{1}{k}\left ( \sin ^{k}x+\cos ^{k}x \right )where x\epsilon R\: \: and\: \: k\geqslant 1      Then f_{4}(x)-f_{6}(x)  equals :

  • Option 1)

    \frac{1}{4}

  • Option 2)

    \frac{1}{12}

  • Option 3)

    \frac{1}{6}

  • Option 4)

    \frac{1}{3}

 

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H Himanshu
Answered 2 days, 1 hour ago
As we have learnt in   Double Angle Formula - - wherein These are formulae for double angles.       Option 1) Option 2) Option 3) Option 4)
Engineering
2 Views   |   6 days, 4 hours ago

Sir 

request you to kindly explain 

Regards

Anushka

9318364602

Engineering
2 Views   |   1 week ago

a 5÷2   b log5base2   c log5base3   d 3÷2

Engineering
30 Views   |   1 week, 2 days ago
 what is the hybridisation and structure  of     ?  

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S Sivani Reddy Kesara
Answered 1 week ago
of what?  
Engineering
37 Views   |   1 week, 3 days ago
Sir please tell the answer of this question and solving method. Two particles executes S.H.M. of same amplitude and frequency along the same straight line. They pass one another when going in opposite directions, and each time their displacement is half of their amplitude. The phase difference between them is  

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S sudhir
Answered 1 week, 3 days ago

Engineering
2 Views   |   2 weeks ago

wht is theanswer nd how

 

Engineering
2 Views   |   2 weeks ago

sir can u expln this

Engineering
52 Views   |   2 weeks, 1 day ago

If an equilateral triangle, having vertex at the (2,-1), has a side along the line, x+y=2, then the area (in sq. units) of this triangle is :

 

  • Option 1)

    3\sqrt{6}

  • Option 2)

    6

  • Option 3)

    6\sqrt{3}

  • Option 4)

    \frac{9}{2}\sqrt{3}

 

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S solutionqc
Answered 2 weeks ago
Option 1) Option 2) 6 Option 3) Option 4)
Engineering
77 Views   |   2 weeks, 1 day ago

If the sum of the first 15 terms of the series 3+7+14+24+37+.......is 15K, then k is equal to :

  • Option 1)

    126

  • Option 2)

    122

  • Option 3)

    81

  • Option 4)

    119

 

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S solutionqc
Answered 2 weeks ago
Use Summation of series of natural numbers -   - wherein Sum of first n natural numbers    and   Summation of series of natural numbers -   - wherein Sum of  squares of first n natural numbers     3+7+14+24+37 ----------15K Let Tn=an2+bn+c            because difference is in A.P: [4,7,10,13-----------------] at n=1     ------(i)     n=2      -------(ii)     n=3        -------(iii)    ...
Engineering
73 Views   |   2 weeks, 1 day ago

Statement 1: An equation of a common tangent to the parabolay^{2}= 16\sqrt{3}x  and the ellipse 2x^{2}+y^{2}= 4 is y= 2x+2\sqrt{3}

Statement 2: If the line y= mx+\frac{4\sqrt{3}}{m},(m\neq 0) is a common tangent to the parabola

y^{2}= 16\sqrt{3}x and the ellipse 2x^{2}+y^{2}= 4, then m satisfies  m^{4}+2m^{2}= 24

  • Option 1)

    Statement 1 is false, statement 2 is true

  • Option 2)

    Statement 1 is true, statement 2 is true; statement 2 is a correct explanation for statement 1

  • Option 3)

    Statement 1 is true, statement 2 is true; statement 2 is not a correct explanation for statement 1

  • Option 4)

    Statement 1 is true, statement 2 is false

 

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S solutionqc
Answered 2 weeks ago
As we learnt in Equation of tangent - - wherein Tengent to is slope form.       Statement 1 :   Statement 2 : If is a common tangent to and ellipse From (i)     statement 2 is a correct explanation for statement 1.     Option 1) Statement 1 is false, statement 2 is true This option is incorrect. Option 2) Statement 1 is true, statement 2 is true; statement 2 is a correct...
Engineering
73 Views   |   2 weeks, 2 days ago

 The eccentricity of an ellipse whose centre is at the origin is \frac{1}{2}

 If one of its directrices  is x=−4, then the equation of the normal to it at

\left ( 1,\frac{3}{2} \right ) is:

 

  • Option 1)

    4x-2y=1

  • Option 2)

    4x+2y=7

  • Option 3)

    x+2y=4

  • Option 4)

    2y-x=2

 

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S solutionqc
Answered 2 weeks, 1 day ago
As learned in concept Eccentricity - - wherein For the ellipse      and Equation of directrices - - wherein For the ellipse       we have  &  x=-4   From this we can calculate the value of a  so a=4 Now,   Hence, Equation of ellipse is- Differentiate to get the value of slope-  So slope at given point      is  Now by using the formula of normal of a equation-    normal at point    is ...
Engineering
40 Views   |   2 weeks, 2 days ago

 Let G be the geometric mean of two positive numbers a and b, and M be the arithmetic mean of  \frac{1}{a}  and \frac{1}{b}

if \frac{1}{M}:G  is 4:5 then a:b can be:

  • Option 1)

    1:4

  • Option 2)

    1:2

  • Option 3)

    2:3

  • Option 4)

    3:4

 

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S solutionqc
Answered 2 weeks, 1 day ago
As we learnt in  Arithmetic mean of two numbers (AM) - - wherein It is to be noted that the sequence a, A, b, is in AP where, a and b are the two numbers. and Geometric mean of two numbers (GM) - - wherein It is to be noted that a,G,b are in GP and a,b are two non - zero numbers.   Given G2 = ab and                                 Option 1) Option 2) Option 3) Option 4)
Engineering
103 Views   |   2 weeks, 2 days ago

The sum of the first 20 terms common between the series 3+7+11+15+..... and 1+6+11+16+..... , is :

  • Option 1)

    4000

  • Option 2)

    4020

  • Option 3)

    4200

  • Option 4)

    4220

 

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S solutionqc
Answered 2 weeks, 1 day ago
Use Sum of n terms of an AP -   and Sum of n terms of an AP   - wherein first term common difference number of terms   series are 3,7,11,15,19,23,27,31.............. and 1,6,11,16,21,26,31.................... So common terms are 11,31,............                                            Option 1) 4000 Option 2) 4020 Option 3) 4200 Option 4) 4220
Engineering
65 Views   |   2 weeks, 2 days ago
Find the last three digits of 17^256

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P Pankaj
Answered 2 weeks, 2 days ago
@Shekhar Solution: We have 172 Now, 17256 2 128 = (17 ) 289 = (290 - 1)128 -290 - (128) (290) +1 128C 2 126(290) 12SC127(290) + 1 , where m is a positive integer. = 1000 m + (128) (290) [(127) (145) - 1] + 1 = 1000 m + (128) (290) (18414) + 1 = 1000 Cm + 683527] + 680 + 1 = 1000 [m + 683527] + 681 Thus, the last three digits of 17256 are 681
Engineering
64 Views   |   2 weeks, 3 days ago

which interval probability lies.

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H Himanshu Meshram
Answered 2 weeks, 3 days ago
@_Rakesh, Minimum value of probability of an event is  0 and maximum ia 1. Probabilty of an event or intervel lies in [0,1]
Engineering
59 Views   |   2 weeks, 3 days ago
find the general trem in the expansion of (x^{2} - yx)^{12}

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H Himanshu Meshram
Answered 2 weeks, 3 days ago
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