Which of the following is 𝑍[𝑎𝑛]𝑧𝑛≥0Z[a n ]zn≥0?a)𝑧𝑧−𝑎z−az​ b)𝑧𝑧+𝑎−1z+a−1z​ c)𝑧𝑧+𝑎z+az​ d)𝑧−𝑎𝑧zz−a​

What is Z[1]a)𝑧𝑧−1z−1z​ b)𝑧𝑧+1z+1z​ c)𝑧𝑧−𝑎z−az​ d)𝑧𝑧+𝑎z+az​

Which of the following is the inverse Z - transform of 𝑧𝑧−𝑎(∣𝑧∣>𝑎)z−az​ (∣z∣>a) ?a)𝑎−𝑛a −n b)ac)𝑎𝑛a n d)1𝑎a1​

QUESTION 5*Which expression is equivalent to (𝑚4𝑞4𝑧−1)(𝑚𝑞5𝑧3)(m 4 q 4 z −1 )(mq 5 z 3 ), where 𝑚m, 𝑞q, and 𝑧z are positive?A) 𝑚4𝑞20𝑧−3m 4 q 20 z −3 B) 𝑚5𝑞9𝑧2m 5 q 9 z 2 C) 𝑚6𝑞8𝑧−1m 6 q 8 z −1 D) 𝑚20𝑞12𝑧−2m 20 q 12 z −2

[𝟏−𝒄𝒐𝒔 (𝒏𝝅𝟐 )−𝒔𝒊𝒏(𝒏𝝅𝟐 )]𝟐. Z transform of the question

werR L D 1 Z * 5 E % S 3 M 9 C P 8 U # A 2 B $ G 6 W @ 4 N © T 7 F H .If all the symbols are dropped from the above series, which element will be 11th to the left of 23rd element from left end?