Question
Download Solution PDFx − \(\rm\frac{1}{x}\) = 3 అయితే, x3 − \(\rm\frac{1}{x^3}\) విలువ కనుగొనండి?
This question was previously asked in
Bihar STET Paper I: Mathematics (Held In 2019 - Shift 1)
Answer (Detailed Solution Below)
Option 1 : 36
Free Tests
View all Free tests >
Bihar STET Paper 1 Mathematics Full Test 1
13.7 K Users
150 Questions
150 Marks
150 Mins
Detailed Solution
Download Solution PDFఇచ్చినది:
x - 1/x = 3
ఉపయోగించిన భావన:
a3 - b3 = (a - b)3 + 3ab(a - b)
గణన:
గుర్తింపును వర్తింపజేయడం:
⇒ x3 - (1/x)3 = (x - 1/x)3 + 3(x × 1/x)(x - 1/x)
⇒ x3 - (1/x)3 = (3)3 + 3(1)(3)
⇒ x3 - (1/x)3 = 27 + 9
⇒ x3 - (1/x)3 = 36
∴ x3 - (1/x)3 యొక్క విలువ 36.
Last updated on Jan 29, 2025
-> The Bihar STET 2025 Notification will be released soon.
-> The written exam will consist of Paper-I and Paper-II of 150 marks each.
-> The candidates should go through the Bihar STET selection process to have an idea of the selection procedure in detail.
-> For revision and practice for the exam, solve Bihar STET Previous Year Papers.