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4 Views | 2 days, 11 hours ago

If f^{-1}x= 3x .. and .. g^{-1}(x)=x^5. Then .. gof^{-1}..is A. 3x^2 B. 243x^5 C. x^5 D. 243.

The options are wrong right. if not explain.

7 Views | 3 days, 1 hour ago

Stuck here, help me understand: - Algebra - BITSAT-2

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

4 Views | 6 days, 4 hours ago

12 If\:\:y=[x+\sqrt{x^2+1}]^{15}+[x-\sqrt{x^2-1}]^{15} then \left ( x^{2}-1 \right )\tfrac{d^{2}y}{dx^{2}}+x\tfrac{dy}{dx} is equal to :

Engineering

2 Views | 6 days, 4 hours ago

1) Let \small z\epsilon C, the set of complex numbers. Then the equation, \small 2\left |Z+3i \right |-\left | Z-i \right |=0 represents :

Sir

request you to kindly explain

Regards

Anushka

9318364602

Engineering

1 week ago

hydroboration reaction equation

Engineering

2 Views | 1 week ago

Log2,log(2^n-1),log(2^n+3) in AP, then n=?

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

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

two particles executes shm of same amplitude and frequency along the same straight line

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

If and A adj A=A AT, then 5 a + b is equal to :

wht is theanswer nd how

Engineering

2 Views | 2 weeks ago

If and A adj A=A AT, then 5 a + b is equal to : A. -1 B. 5 C. 4 D. 13

sir can u expln this

Engineering

2 Views | 2 weeks ago

If the given matrix A is of order 5\times 4 and the element a_i_j = i^2+j^2, then which of the the following is true ? ans= a21 +a23=a33

pls expln in detail

Engineering

52 Views | 2 weeks, 1 day ago

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

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

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

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

2 Views | 2 weeks, 1 day ago

What is the percentage mass of N in a mixture of 0.5 mole NH3 and 1 mole Ca(NO3)2

Engineering

73 Views | 2 weeks, 1 day ago

Can someone help me with this, - Co-ordinate geometry - JEE Main-6

Statement 1: An equation of a common tangent to the parabola $y^{2}= 16\sqrt{3}x$ 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

Can someone explain - Co-ordinate geometry - JEE Main-6

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

17 Views | 2 weeks, 2 days ago

Try this! The correct order of -I effect is

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

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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

Need clarity, kindly explain! - Sequence and series - JEE Main

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

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

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

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

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