x4 – 62x2 + 1 = 0 Divide by x2 x2 – 62 + 1/x2 = 0 ⇒ x2 + 1/x2 = 62 As we know, (x + 1/x)2 = x2 + 1/x2 + 2 ⇒ (x + 1/x)2 = 62 + 2 = 64 ⇒ x + 1/x = √64 = 8 Again, As we know, (x + 1/x)3 = x3 + 1/x3 + 3 (x + 1/x) ⇒ 83 = x3 + 1/x3 + 3 × 8 ⇒ x3 + 1/x3 = 512 – 24 = 488
Select the word which means the same as the group of words given.
Extreme fear of confined places
Scandalous
A. The allegations of a scandalous incident have been circulating inside media offices for weeks now.
B. It is scandalous t...
Tempestuous
Given below are three sentences which use a common word highlighted. Find out the correct pair of the sentences that use the word correctly.
i...
Select the most appropriate ANTONYM of the word established from the given sentence:
Siben feels great satisfaction and gratified when he finds...
Select the correct synonym of the given word.
Obligatory
Select the wrongly spelt word.
In the following question, four words have been given out of which one word is incorrectly spelt. Select the incorrectly spelt word.
Select the word , which means the same as the group of word given –
A gigantic statue
Directions: In each question below, word is used in four different ways. Choose the option in which the usage of the word is INCORRECT or INAPPROPRIA...
