Question
Download Solution PDFजर x + y + z = 0 आणि x2 + y2 + z2 = 40 असेल, तर xy + yz + zx चे मूल्य किती?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेल्याप्रमाणे:
x + y + z = 0
x2 + y2 + z2 = 40
वापरलेली संकल्पना:
(x + y + z)2 = x2 + y2 + z2 + 2(xy + yz + zx)
गणना:
x + y + z = 0
⇒ (x + y + z)2 = 02
⇒ x2 + y2 + z2 + 2(xy + yz + zx) = 0
⇒ 40 + 2(xy + yz + zx) = 0
⇒ 2(xy + yz + zx) = - 40
⇒ xy + yz + zx = - 20
∴ आवश्यक उत्तर -20 आहे.
Last updated on Jul 9, 2025
-> The SSC CGL Notification 2025 for the Combined Graduate Level Examination has been officially released on the SSC's new portal – www.ssc.gov.in.
-> Bihar Police Admit Card 2025 Out at csbc.bihar.gov.in
-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.
-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.
-> Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.
-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.
-> The CGL Eligibility is a bachelor’s degree in any discipline.
-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.
-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.
-> The AP DSC Answer Key 2025 has been released on its official website.
-> The UP ECCE Educator 2025 Notification has been released for 8800 Posts.