Login
Subject: Maths, asked on 23/5/18

How to do this question number 22 on Quadratic equations?:

22. If α, β and γ are the roots of the equation, x3-x-1=0, then 1+α1-α+1+β1-β+1+γ1-γ has the value.

a. 0       b. -1        c. -7       d. 1
 

Subject: Maths, asked on 23/5/18

Let * be the operation on set {1,2,3,4,5} defined by a*b = H.C.F. ( a & b ). Form composition table and state whether the operation is binary or not. Also, check for commutative & assosciative properties. Does identity element exist ? Justify.

Subject: Maths, asked on 22/5/18

que 11


11.  Solve the equations (i) log5x4 + 5 - log1/5 x2 + 25 = 32(ii)  log5x4 + 5 - log1/5 x2 + 25 = 3

Subject: Maths, asked on 21/5/18

solve this with proper steps
9.  If f(x) = log1/2x2-2x+2, then domain of f(x) is
A)  R                   B)  R-1, 2         C)  R+               D)  R-(1, 2)

Subject: Maths, asked on 20/5/18

3x=4x-1 then x can not be equal to

1) 2log3power2 
2)2/2-log 2poewer3
​3)1/1-log4power3
​4)2log2power3/2log2power3-1
 

Subject: Maths, asked on 19/5/18

Question 193

193.  Find the missing number from the options, if the same rule is applied in all the three figures.

(a)  21                           (b)  25                       (c)  27                              (d)  29

Subject: Maths, asked on 19/5/18

Consider functions f and g such that composite gof is defined and is one-one. Are f and g both necessarily one-one ?

Subject: Maths, asked on 19/5/18

Show that if f: A to B and g: B to C are onto, then gof : A to C is also onto.

Subject: Maths, asked on 19/5/18

If f: A to B and g: B to C then gof will be from A to C or fog will be from A to C ?          

Subject: Maths, asked on 19/5/18

What do we mean when we are saying (modulus of x) is x when x is positive and (modulus of x) is -x when x is negative ? Because regardless of x being positive or negative, we get modulus of x as x or in other words positive.

please explain.
 

Subject: Maths, asked on 18/5/18

If Z is a complex number such that: (Z^2018) = i +( 2018)^2018, then find the number of 1. Complex roots, 2. Roots lying in 2nd Quadrant and in 1st Quad

Subject: Maths, asked on 18/5/18

Solve this:

Subject: Maths, asked on 17/5/18

Suppose R = { (b,c) }

How can this relation be transitive? There are only two elements in it. Then how ?

Subject: Maths, asked on 17/5/18

How is a relation transitive when there is only one element in it ?

Subject: Maths, asked on 16/5/18

if a,b,c  are positive real  numbers such that ab2c3=64 then minimum value of 
1/a +2/b +3/c=?  (ans is 3)

12345
What are you looking for?