Ask a Doubt
Request a call back

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

CBSE Class 12-commerce Answered

Q 28
Asked by kumarsaurav68 | 31 Oct, 2018, 12:29: PM
Expert Answer
begin mathsize 18px style open vertical bar table row cell negative yz end cell cell straight y squared plus yz end cell cell straight z squared plus yz end cell row cell straight x squared plus xz end cell cell negative xz end cell cell straight z squared plus xz end cell row cell straight x squared plus xy end cell cell straight y squared plus xy end cell cell negative xy end cell end table close vertical bar t a k e space x comma space y space a n d space z space c o m m o n space f r o m space c o l u m n equals xyz open vertical bar table row cell fraction numerator negative yz over denominator straight x end fraction end cell cell straight y plus straight z end cell cell straight z plus straight y end cell row cell straight x plus straight z end cell cell fraction numerator negative xz over denominator straight y end fraction end cell cell straight z plus straight x end cell row cell straight x plus straight y end cell cell straight y plus straight x end cell cell fraction numerator negative xy over denominator straight z end fraction end cell end table close vertical bar equals xyz open vertical bar table row cell fraction numerator negative yz over denominator straight x end fraction end cell cell straight y plus straight z end cell cell straight z plus straight y end cell row cell straight x plus straight z end cell cell fraction numerator negative xz over denominator straight y end fraction end cell cell straight z plus straight x end cell row cell straight x plus straight y end cell cell straight y plus straight x end cell cell fraction numerator negative xy over denominator straight z end fraction end cell end table close vertical bar m u l t i p l y space x comma y comma z space r o w space w i s e equals open vertical bar table row cell negative yz end cell cell xy plus xz end cell cell xz plus xy end cell row cell xy plus yz end cell cell negative xz end cell cell zy plus xy end cell row cell xz plus zy end cell cell yz plus xz end cell cell negative xy end cell end table close vertical bar subscript straight R 1 equals straight R 1 plus straight R 2 plus straight R 3 end subscript equals open vertical bar table row cell xy plus yz plus xz end cell cell xy plus yz plus xz end cell cell xy plus yz plus xz end cell row cell xy plus yz end cell cell negative xz end cell cell zy plus xy end cell row cell xz plus zy end cell cell yz plus xz end cell cell negative xy end cell end table close vertical bar equals open parentheses xy plus yz plus xz close parentheses open vertical bar table row 1 1 1 row cell xy plus yz end cell cell negative xz end cell cell zy plus xy end cell row cell xz plus zy end cell cell yz plus xz end cell cell negative xy end cell end table close vertical bar straight C 1 equals straight C 1 minus straight C 2 equals open parentheses xy plus yz plus xz close parentheses open vertical bar table row 0 1 1 row cell xy plus yz plus xz end cell cell negative xz end cell cell zy plus xy end cell row 0 cell yz plus xz end cell cell negative xy end cell end table close vertical bar equals open parentheses xy plus yz plus xz close parentheses squared open vertical bar table row 0 1 1 row 1 cell negative xz end cell cell zy plus xy end cell row 0 cell yz plus xz end cell cell negative xy end cell end table close vertical bar straight C 3 equals straight C 3 minus straight C 2 equals open parentheses xy plus yz plus xz close parentheses squared open vertical bar table row 0 1 0 row 1 cell negative xz end cell cell xy plus yz plus xz end cell row 0 cell yz plus xz end cell cell negative left parenthesis xy plus yz plus xz right parenthesis end cell end table close vertical bar equals open parentheses xy plus yz plus xz close parentheses cubed open vertical bar table row 0 1 0 row 1 cell negative xz end cell 1 row 0 cell yz plus xz end cell cell negative left parenthesis 1 right parenthesis end cell end table close vertical bar equals open parentheses xy plus yz plus xz close parentheses cubed end style
Answered by Arun | 08 Nov, 2018, 12:45: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 12-commerce - Maths
If we want ₹8,640 three years from now and the compounded interest rate is 20% p.a how much should we invest today? (assuming interest is compounded yearly)  
Asked by manojlodhval | 09 Sep, 2022, 11:33: PM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
applied mathematics not there
Asked by ranjanasingh25812 | 16 May, 2022, 09:01: PM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
A certain scheme of a bank offers an annuity of rupees 1800 for 10 years if invest rupees 12000. What will be the rate of interest
Asked by rj21071997 | 02 May, 2022, 03:49: PM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
The mean output of a group of 50 workers was found to be 240 article. Afterwards it was detected that the output of one worker was wrongly recorded as 320 instead of 230 find the corrected value of mean output
Asked by lokeshshah0404 | 09 Nov, 2021, 02:40: PM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
Bill is drawn on 2nd march 2020 for 9 month was dosconted on 3rd april 2020.what is the legal due date
Asked by sumitfulsundar732 | 09 Aug, 2021, 09:09: AM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
Probability
Asked by sehgalshubham86 | 12 Jan, 2021, 07:31: PM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
In a city 1% of population is actually suffering from covid 19. A laboratory test is 95% effective is detecting the disease when it was actually present. however lab test yeilds a false positive results for 0.5% of healthy person's test. A person was selected for test and test report was positive, find the probality he was not loving disease.
Asked by mike010thedanger | 11 Dec, 2020, 11:22: AM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
If f(x) = sinx +sin? (x + 7/3) + cos2.cos (x + (x+5) and g(5/4) = 1, then (gof)(x) =
Asked by adithyavardhansudagoni2004 | 27 Sep, 2020, 11:08: AM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
What is the algorithm to find whether a given function is surjective or not? Illustrate with two examples.
Asked by raksha2sanubth | 19 Jul, 2020, 10:39: AM
ANSWERED BY EXPERT
CBSE 12-commerce - Maths
solve this full
Asked by as9247555 | 19 May, 2020, 08:02: AM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt