Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

JEE Class main Answered

If a function f:[2,infinity)->B defined by f(x)=x^2-4x+5 is a bijection,then B?
Asked by g_archanasharma | 13 Apr, 2019, 09:31: PM
answered-by-expert Expert Answer
G i v e n colon space f left parenthesis x right parenthesis equals x squared minus 4 x plus 5 f left parenthesis x right parenthesis equals x squared minus 4 x plus 4 plus 1 equals left parenthesis x minus 2 right parenthesis squared plus 1 S I n c e space i t space i s space g i v e n space t h a space x greater or equal than 2 rightwards double arrow left parenthesis x minus 2 right parenthesis greater or equal than 0 space rightwards double arrow left parenthesis x minus 2 right parenthesis squared greater or equal than 0 rightwards double arrow left parenthesis x minus 2 right parenthesis squared plus 1 greater or equal than 1 rightwards double arrow f left parenthesis x right parenthesis greater or equal than 1 H e n c e comma space t h e space c o d o m a i n space o f space f space i. e. space B equals left square bracket 1 comma infinity right parenthesis
Answered by Renu Varma | 14 Apr, 2019, 04:11: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
JEE main - Maths
Doubt
question image
Asked by www.u624423 | 15 May, 2024, 11:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
rail road curve is to be laid out on a circle what radius should be used if the track is to change direction by 25 degrees in a distance of 40 m
question image
Asked by adityapim001 | 15 May, 2024, 06:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
Lt cosec(x-a)/x-a x extends to a
Asked by pallapothujoshna | 14 May, 2024, 01:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
qno 13
question image
Asked by amanniju2 | 13 May, 2024, 11:49: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
sir the answer is c), but sir how is it possible, because the formula for circular permutation is (n-1)!
question image
Asked by ashwinskrishna2006 | 11 May, 2024, 12:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
doubt
question image
Asked by ishansheoran7 | 10 May, 2024, 04:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
Please solve my problem
question image
Asked by krishn123radha | 10 May, 2024, 11:21: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
TanA=4/3 then SinA=.........whereA€Q3
question image
Asked by pandu.munganda | 10 May, 2024, 11:00: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
integration
question image
Asked by prasannajitdey.babai | 10 May, 2024, 10:35: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Maths
23,47,1p156 relation
Asked by obravickykumar50 | 07 May, 2024, 09:27: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×