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Engineering
4 Views   |   2 days, 11 hours ago

The options are wrong right. if not explain.

Engineering
7 Views   |   3 days, 1 hour ago

Let where       Then   equals :

• Option 1)

• Option 2)

• Option 3)

• Option 4)

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
4 Views   |   6 days, 4 hours ago
Engineering
2 Views   |   6 days, 4 hours ago

Sir

request you to kindly explain

Regards

Anushka

9318364602

Engineering
1 week ago
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     ?

S Sivani Reddy Kesara
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

S sudhir
Answered 1 week, 3 days ago

Engineering
2 Views   |   2 weeks ago

Engineering
2 Views   |   2 weeks ago

sir can u expln this

Engineering
2 Views   |   2 weeks ago

pls expln in detail

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)

• Option 2)

6

• Option 3)

• Option 4)

S solutionqc
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

S solutionqc
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
2 Views   |   2 weeks, 1 day ago
Engineering
73 Views   |   2 weeks, 1 day ago

Statement 1: An equation of a common tangent to the parabola  and the ellipse is

Statement 2: If the line is a common tangent to the parabola

and the ellipse then m satisfies

• 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

S solutionqc
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

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

is:

• Option 1)

• Option 2)

• Option 3)

• Option 4)

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
17 Views   |   2 weeks, 2 days ago

The correct order of -I effect is

• Option 1)

$-O^-> -COO^-> -C\left ( CH_{3} \right )_{3}> -CH_{3} > -D$

• Option 2)

$-O^-< -COO^-< -C\left ( CH_{3} \right )_{3}< -CH_{3} < -D$

• Option 3)

$-O^-> -COO^-> -C\left ( CH_{3} \right )_{3}> -CH_{3} < -D$

• Option 4)

$-COO^-> -O^-> -C\left ( CH_{3} \right )_{3} > -D> -CH_{3}$

S SudhirSol
Answered 2 weeks, 1 day ago
As we learned   Positive inductive effect - Having less tendency to attractive   e- towards itself as compared to the Hydrogen atom - wherein    The correct order of +I effect is  D is slightly more electron releasing than H.   Option 1)       Option 2) Option 3) Option 4)
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    and

if   is 4:5 then a:b can be:

• Option 1)

• Option 2)

• Option 3)

• Option 4)

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

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