Find the inverse Z-transform of(𝒂) 𝒛𝟑−𝟐𝟎𝒛(𝒛−𝟐)𝟐(𝒛−𝟒) (𝒃) 𝒛𝒛𝟑−𝒛𝟐+𝒛−𝟏 . .

Find the Z-transform of 𝟐𝒏 + 𝟕 𝒔𝒊𝒏 (𝒏 𝝅𝟒 ) − 𝟔𝒂𝟐

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

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

Z transform of it

The inverse z-transform of X(z)=5z(z−1)2−2z(z−0.5)2𝑋(𝑧)=5𝑧(𝑧−1)2−2𝑧(𝑧−0.5)2 will be: