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What is contunity of function

Posted by Prasant Offical 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Sia ? 3 years, 4 months ago

a continuous function is a function that does not have any abrupt changes in value, known as discontinuities. More precisely, a function is continuous if arbitrarily small changes in its output can be assured by restricting to sufficiently small changes in its input.

ANSWER

Ronnie has a bag containing 7red and 9green balls.from it ,he out 6balls simultaneously at random.the probability that 4of them are red and the rest are green is?

Posted by Divyansh Singh 3 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Divide 1000 3542

Posted by Aditi Dixit 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Gaurav Kumar 3 years, 4 months ago

1/3.542

ANSWER

Log10²³

Posted by Thoibi Langpoklakpam 3 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Aditi Ahuja 3 years, 4 months ago

Log10^23 23 log 10 Log10=1 Ans- 23

Nishant Lamba 3 years, 4 months ago

Cbse

Ramnivas Verma 3 years, 4 months ago

23

ANSWER

If A and B are symmetric matrix prove that AB - BA is a slew symmetric matrix.

Posted by Ayushi Tripathy 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Tanvir Singh 😊😀😊 3 years, 4 months ago

If A and B are symmetric then A=A'and B=B' AB-BA=A'B'-B'A' =(BA)'-(AB)' =(BA-AB)' =-(AB-BA)' Hence AB-BA is skew symmetric....

ANSWER

What is the difference between relation and function ?is every relation a function?why?

Posted by Samayara Singh 3 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Prachi Agarwal 3 years, 4 months ago

Relation is the subset of Cartesian product ( A*B). Function is the subset of relation which have a unique image of every element in its domain to its co domain . No every relation is not a function as function should have unique image.

Bhumika Agrawal 3 years, 4 months ago

No every relation is not a fun

Aditya Birla 3 years, 4 months ago

Relation is all possible pairs formed by two set while functions are the specific pairs. Relate function as a Machine. In Machine(eg. R.O water filter) you put input(water) and you get output (pure water) but you cannot put stones in machine, machine will not accept it. Similarly function is the machine where you cannot put all values for that specific function and as output you get a value. So Every relation is not function

ANSWER

From where i have to study for objective type questions of maths to get good marks

Posted by Suhani Rana 3 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Bhumika Agrawal 3 years, 4 months ago

Rd sharma

Anurag Chaudhary 3 years, 4 months ago

Rd sharma

ANSWER

Row transformation rule of matrix explained with tips

Posted by Narender Singh 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Satyam Satyam 3 years, 4 months ago

I have my own trick which I have discovered by that you can find inverse by elimentry row transformation easily without applying any of your logic

ANSWER

(A+B) ^2

Posted by Sagar Sharma 3 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Magdalin Felicita 3 years, 4 months ago

(A+B)²=A²+2AB+B²

Bhumika Agrawal 3 years, 4 months ago

(A-B)^2 +4AB

Rishav Raj 3 years, 4 months ago

A^2+b^2+2ab

ANSWER

Differntiate the functions with respect to x:cos(x)

Posted by Annu Singh 3 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Bhumika Agrawal 3 years, 4 months ago

-sin x

Satyam Satyam 3 years, 4 months ago

-sinx

ANSWER

log^cosec x=y

Posted by Prakhar Jain 3 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Bhumika Agrawal 3 years, 4 months ago

dy/dx = 1/cosec x * d(cosec x )/dx dy/dx = 1/cosec x * (-cosec x. cot x) dy/dx = -cot x

Bhumika Agrawal 3 years, 4 months ago

Right question is log (cosec x)= y

Bhumika Agrawal 3 years, 4 months ago

This question is wrong

ANSWER

I face a lot of difficulty in solving ques of ex 4.2 maths is there any reliable solution. I don't know which operation should I apply at a right time I m totally confused

Posted by Satyam Satyam 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Sumit Kumar 3 years, 4 months ago

Which question

ANSWER

What type of matrix

Posted by Jomir Hussain 3 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Bhumika Agrawal 3 years, 4 months ago

Upper triangular and lower triangular matrix

Bhumika Agrawal 3 years, 4 months ago

Identify matrix bhi hota h

Satyam Satyam 3 years, 4 months ago

There are various types of matrix like Row matrix, Coloumn matrix,Unit matrix,Zero matrix,Square Matrix,Scalar matrix and Diagnal matrix

ANSWER

Which book is the best for mcq of maths

Posted by Suhani Rana 3 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Ashmit Rathi 3 years, 4 months ago

R S aggarwal

Gagandeep Malhyan 3 years, 4 months ago

Question bank

ANSWER

pariyojna karya samagris

Posted by Simmi Verma 3 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Show that the relation is R in the set R of real numbers, defined as R={(a, b):a<=b2 } is neither reflexive nor symmetric nor transitive.

Posted by Harshitha D 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Siddhant Singh 3 years, 4 months ago

How the solution of this question can be posted in image formate

ANSWER

Kya Ex 1.4 remove h

Posted by Tanushree Kumawat 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Anurag Chaudhary 3 years, 4 months ago

Ha 1.4 or 6.4 bhi

ANSWER

A={1,2,3,4} given by R={(a,b):a-b=10}

Posted by Simran Prajapati 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Preeti Dabral 3 years, 4 months ago

TO DETERMINE

CALCULATION

It is given that

Now a relation from A to A is a subset of A × A

Where A × A is the Cartesian product of A and A

We we have to determine a Relation R with the below mentioned property

Now there does not exist any ( a, b) in A × A such that a - b = 10

So the Required Relation is Empty

ANSWER

Let f: ? → ? be a function given by f(x)=ax+b for all x in R . Find the constants a and b such that fof = IR

Posted by M Vishnu Sreedharan 3 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Solve lim x approaches zero (sin4x-tan4x)/x^3

Posted by Sher Singh 3 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Under what conditions a function f:A→B is one-one, if n(A)=m and n(B)=n .

Posted by Arnab H. 3 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Objective function of a LPP is (a)a constant (b)a function to be maximized or minimized under given constraints. (c)a relation between the variables (d)none of these .

Posted by Arnab H. 3 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

What is the domain of the function sin^ -1 (1-x)

Posted by Arnab H. 3 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

AB is a straight road leading to C , the foot of a tower . A is at distance 200m. from C and B at 75m. from C. If the angle of elevation of the tower at B be double the angle of elevation at A, then the hight of the tower is :

Posted by Sahil Kumar 3 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

if A and B are matrices of same order, then ( 3A - 2B) is equal to

Posted by Bhami Anand 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Astha Gupta 3 years, 4 months ago

3(A) - 2(B)

ANSWER

$$\displaystyle\int\limits^{tanx}_{1/e} \frac{tdt}{1+t^2}$$

Posted by ?⚡Her?️⚡? 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

? Royal Thakur ? 3 years, 4 months ago

Hii

ANSWER

Prove that cos-112/13 + sin-1 3/5 = sin-1 56/65

Posted by Shreyas Singh 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Preeti Dabral 3 years, 4 months ago

Let {tex}{\cos ^{ - 1}}\frac{{12}}{{13}} = \theta{/tex} so that {tex}\cos \theta = \frac{{12}}{{13}}{/tex}
{tex}\therefore \sin \theta = \sqrt {1 - {{\cos }^2}\theta } = \sqrt {1 - \frac{{144}}{{169}}}{/tex}{tex}= \sqrt {\frac{{25}}{{169}}} = \frac{5}{{13}}{/tex}
Again, Let {tex}{\sin ^{ - 1}}\frac{3}{5} = \phi{/tex} so that {tex}\sin \phi = \frac{3}{5}{/tex}
{tex}\therefore \cos \phi = \sqrt {1 - {{\sin }^2}\phi } = \sqrt {1 - \frac{9}{{25}}} = \sqrt {\frac{{16}}{{25}}} = \frac{4}{5}{/tex}
Since {tex}\sin \left( {\theta + \phi } \right) = \sin \theta \cos \phi + \cos \theta \sin \phi {/tex} {tex} = \frac{5}{{13}} \times \frac{4}{5} + \frac{{12}}{{13}} \times \frac{3}{5}{/tex}
{tex}= \frac{{20 + 36}}{{65}} = \frac{{56}}{{65}}{/tex}
{tex}\Rightarrow \theta + \phi = {\sin ^{ - 1}}\frac{{56}}{{65}}{/tex}
{tex} \Rightarrow {\cos ^{ - 1}}\frac{{12}}{{13}} + {\sin ^{ - 1}}\frac{3}{5} = {\sin ^{ - 1}}\frac{{56}}{{65}}{/tex}

ANSWER

There are two families A and B. There are 4 men, 6 women and 2 men in family A whereas 2 men, 2 women and 4 children in family B. The recommended daily requirement for calories is Man: 2400, woman: 1900, child: 1800 and for proteins is Man: 55 gm, woman: 45 gm, child: 33 gm. In order to find the total requirement of calories and prot eins for each of the two families if we represent number of members in two families by matrix P and requirement of calories and proteins by matrix Q and do the product PQ= R (where R is the resultant matrix obtained by the product). Then answer the following: The order of the matrix P should be

Posted by Shreyas Singh 3 years, 4 months ago

CBSE > Class 12 > Mathematics

5 answers

Tushar Hooda 3 years, 4 months ago

I hope u will find it helpful

Tushar Hooda 3 years, 4 months ago

Order of matrix p be 2×3

Tushar Hooda 3 years, 4 months ago

Number of family members X=[ 4 2 6 2 2 4 ] Daily amount of calories Y= ⎣ ⎢ ⎢ ⎡ 2400 1900 1800 ⎦ ⎥ ⎥ ⎤ Daily amount of proteins Z= ⎣ ⎢ ⎢ ⎡ 45 55 33 ⎦ ⎥ ⎥ ⎤ Total requirement of calories: XY=[ 4 2 6 2 2 4 ] ⎣ ⎢ ⎢ ⎡ 2400 1900 1800 ⎦ ⎥ ⎥ ⎤ =[ 24600 15800 ] Total requirement of proteins XZ=[ 4 2 6 2 2 4 ] ⎣ ⎢ ⎢ ⎡ 45 55 33 ⎦ ⎥ ⎥ ⎤ =[ 576 332 ]

Tushar Hooda 3 years, 4 months ago

If it is 2 children then answer is :

Tushar Hooda 3 years, 4 months ago

In 2nd line is it 2 men or children

ANSWER

Derivative of e^sin(cosx)

Posted by Anoopa Elizabeth Sebastian 3 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Tushar Hooda 3 years, 4 months ago

d(e^sin(cosx) / dx = =e^sin(cosx). Cos(cosx). -sinx =-e^sin(cosx).cos(cosx). Sinx

Tushar Hooda 3 years, 4 months ago

d(e^sin(cosx) / dx = e^sin(cosx). Cos(cosx). -sinx -e^sin(cosx).cos(cosx). Sinx

ANSWER

Find principal value of tan-1(sin(π/2))

Posted by Abhijith S A 3 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Tushar Hooda 3 years, 4 months ago

tan-¹(sin(π/2) = tan-¹(1) = tan-¹(tanπ/4) = π/4 Thus, π/4 is required principal value as it lies b/w (-π/2 , π/2)

ANSWER

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