CBSE > Class 12 > Mathematics | CBSE Board | Homework Help

He should invest Rs.2000 in bond A and Rs.10000 in bond B to get Max intrest. Here subject to constraint are x+y<=12000 x>=2000 y>=4000 Objective function z= (8/100)x+(10/100)y I think this can help and now u can make graph.

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From where I can get free previous years question papaers with sol at the end...

Posted by Madhavi Singh 6 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Madhavi Singh 6 years ago

papers?

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Madhavi Singh 6 years, 3 months ago

2019 ???

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Shivam Singh 6 years, 4 months ago

2019

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1/tanx+1/tany+1/tanz =180 degree Prove that x+y+z = xyz

Posted by Archit Srivastav 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Dolly ?️ 6 years, 4 months ago

I think it is like this Tan^-1(x) +tan^-1(y) +tan^-1(z) =Pi Tan^-1(x) tan^-1(y) +tan^-1(z)=pi/3 +pi/3+pi/3 On comparing X=root 3y=root3 z=root3.

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Simplify sin^-1[x√(1-x)-√x√(1-x^2)]

Posted by Hariom Jaiswal 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Archit Srivastav 6 years, 4 months ago

3/2

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Cbse 12th compartment paper math 10 year previous paper download

Posted by Shailesh Alam 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Řøhăň Řąjpůť ✌️✊ 6 years, 4 months ago

u can easily download it from Google

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All trigonometric functions

Posted by Drishti Verma 6 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Prince Swarn 6 years, 4 months ago

And their inverse also

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Prince Swarn 6 years, 4 months ago

Sin Cos Tan Cot Sec Cosec

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If tan^-1(x-1/x-2)+tan^-1(x+1/x+2)=pi/4 then find the value of x

Posted by Kanhaiya Pradhan 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Dolly ?️ 6 years, 4 months ago

X=1/root2

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Construct a matrix A=[aij] of order 2*2whose elements ऐज are given by aij=e2ix sinjx

Posted by Aditya Panday 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Nishu Sahu 6 years, 4 months ago

A contain 4 elements. a11= e2x sinx , a12= e2x sin2x , a21= e4x sinx , a22= e4x sin2x

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solve 3 variable equation using matrix x+2y-3y=6 3x+2y-2z=3 2x-y+z=2

Posted by Priya Dharshini ? 6 years, 4 months ago

CBSE > Class 12 > Mathematics

5 answers

Priya Dharshini ? 6 years, 4 months ago

I need to use matrix and solve it x=A^-1B by that.... i need to check my answer

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Priya Dharshini ? 6 years, 4 months ago

Oops 1st equation it is -3z

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Aman Kumar 6 years, 4 months ago

Ramesh ji ...r u yakshi?????

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Preeti Baliyan 6 years, 4 months ago

In first eq.let X=y-6 Put X=y-6 in eq second and third Then X=7/6 and Y=43/6 and Z=41/6 answer

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Aman Kumar 6 years, 4 months ago

First of all, 1st equation does not have any z variable....???

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Solve: cos inverse X + sin inverse X by 2 is equals to 5 / 6

Posted by Ravi Dubey 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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For what values of k is the following function continuous at x=0 f(x) = ( 1-cos4x÷8x , x is not equal to 0

Posted by Ching Mawi 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Check the injectivity and surjectivity of the function f:R R define by f(x) =3-4x

Posted by Sree Ramulu 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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6 to 8 class i have to give activity can you help me

Posted by Rajkumar Raj 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

If A,B, C are three non-Zero matrix of same order. Find the condition on A such that AB=AC. B=C

Posted by Akanksha Kumari 6 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Sia ? 6 years, 4 months ago

Let {tex}A = \left[ {\begin{array}{*{20}{c}} 1&0 \\ 0&0 \end{array}} \right],B = \left[ {\begin{array}{*{20}{c}} 2&3 \\ 4&0 \end{array}} \right]{/tex} and {tex}C = \left[ {\begin{array}{*{20}{c}} 2&3 \\ 4&4 \end{array}} \right]\left[ {\because B \ne C} \right]{/tex}
{tex}\therefore AB = \left[ {\begin{array}{*{20}{c}} 1&0 \\ 0&0 \end{array}} \right]\left[ {\begin{array}{*{20}{c}} 2&3 \\ 4&0 \end{array}} \right] = \left[ {\begin{array}{*{20}{c}} 2&3 \\ 0&0 \end{array}} \right]{/tex} ....(i)
And {tex}\therefore AC = \left[ {\begin{array}{*{20}{c}} 1&0 \\ 0&0 \end{array}} \right] \cdot \left[ {\begin{array}{*{20}{c}} 2&3 \\ 4&0 \end{array}} \right] = \left[ {\begin{array}{*{20}{c}} 2&3 \\ 0&0 \end{array}} \right]{/tex} .....(ii)
Thus, we see that AB = AC [using Eqs. (i) and (ii)]
Where, A is non-zero matrix but {tex}B \ne C{/tex}

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Rahul Gupta 6 years, 4 months ago

A is an identity matrix of the required order

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Limit x to 0 sinx - x / x

Posted by Sneha Singh 6 years, 4 months ago

CBSE > Class 12 > Mathematics

6 answers

Vivek Kumar 6 years, 4 months ago

Lim sinx/x - 1 X-0

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Aman Kumar 6 years, 4 months ago

Oh yaah , The answer is 0 ..

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Rahul Gupta 6 years, 4 months ago

Lim x tends to 0 sinx/x = 1 Lim x tends to o x/x = 1 So lim x tends to 0 sinx- x /x = 0

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Anshika Sharma 6 years, 4 months ago

Answer is 1 Sinx-x/x can be splited into sinx/x-x/x........

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Shikha Baranwal 6 years, 4 months ago

Lim x to 0 sinx-x /x Lim x to 0 sinx/x-1 =1-1 =0

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Aman Kumar 6 years, 4 months ago

Answer is 1....Is it correct??

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Let f:R-(-3/5)➡R be a function defined as f(x) = (5x+3)^-1, find f^-1

Posted by Neha Ojha 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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How to solve the matrix of order 4x4?

Posted by Devendra Nath Pandey 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Abhinav Singh 6 years, 4 months ago

As we solve the 3x3 matrix we use constiuent of 2x2 matrix Similarly in 4x4 only a matrux of 3x3 is used in constituent if first step then solve this3x3 matrix by above method

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Find the value of k so that f(x)={sin kx/x,x<0 8-3x, x>=0 may be continuous at x=0

Posted by Pranjal Patel 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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Sin-1{(x+√(1-x2))/√2}

Posted by Ravi Garg 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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8^x/x^8 .differentiate w.r.t.x

Posted by Jatin Kumar 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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Find the equation of all lines whose slope is 2 and being tangent to the curve y+ 2 ____ = 0 x--3

Posted by Tushar Amalseda 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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show that the altitude of a right circular cone of maximum volume that can be inscribed in a sphere of radius r is 4r/3

Posted by Ansh Chawla 6 years, 4 months ago

CBSE > Class 12 > Mathematics

1 answers

Priya Parihar 6 years, 4 months ago

Ask to teacher for better solution

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Integrate 7^x.e^x dx

Posted by Shreyansh Sharma 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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Show that P= p q ,Q=r s q p -s r Commute.

Posted by Chingboi Ngaihte 6 years, 4 months ago

CBSE > Class 12 > Mathematics

0 answers

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Is there any difference between glucose and fructose ?

Posted by Vivek Kumar 6 years, 4 months ago

CBSE > Class 12 > Mathematics

3 answers

Yogita Ingle 6 years, 4 months ago

GLUCOSE	FRUCTOSE
Also known as grape sugar	Also known as fruit sugar
Six-membered ring	Five-membered ring
The preferred energy source for the body	Not the preferred energy source for brain and muscles
Less lipogenic	More lipogenic
Less fat producing	More fat producing
Relies on hexokinase/ glucokinase for initiating metabolism	Relies on fructokinase for initiating metabolism
It is an aldohexose	It is a ketohexose
Forms a pyranose ring structure	Forms a furan ring structure

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Abhinav Singh 6 years, 4 months ago

Fructose and glucose have same formula but different structures

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Priya Dharshini ? 6 years, 4 months ago

Fructose is a simple sugar commonly found in fruits and vegetables. Glucose is blood sugar, is present in all major carbohydrates like starch and table sugar. I think so this is difference

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CBSE 2007 question of 3-d geometry

Posted by Aditya Kumar 6 years, 4 months ago

CBSE > Class 12 > Mathematics