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Find Y’ If:
1. 𝒚 = 𝒙 𝒆√ 𝒙
2. 𝒚 = √𝐭𝐚𝐧−𝟏(𝒙 𝟐)
3. 𝒚 = 𝐬𝐢𝐧𝐡(
𝟏 + 𝒙
𝟏 − 𝒙
)
𝟐
4. 𝒚 𝟐
+ 𝐬𝐢𝐧−𝟏
√ 𝒙𝒚
Solution:
1. 𝒚′
= 𝒆√ 𝒙
+ 𝒙𝒆√ 𝒙
. (
𝟏
𝟐
𝒙
−𝟏
𝟐⁄
)
2. 𝒚′
=
𝟏
𝟐
(𝐭𝐚𝐧−𝟏
(𝒙 𝟐
))
−𝟏
𝟐⁄
.
𝟏
𝟏 +(𝒙 𝟐) 𝟐
. 𝟐𝒙
3. 𝒚′
=
𝟐(𝐬𝐢𝐧𝐡(
𝟏 + 𝒙
𝟏 − 𝒙
)) . 𝐜𝐨𝐬𝐡(
𝟏 + 𝒙
𝟏 − 𝒙
) .
( 𝟏 − 𝒙) − (−𝟏 − 𝒙)
(𝟏 − 𝒙) 𝟐
4. 𝟐𝒚𝒚′
+
𝟏
√ 𝟏 − (√ 𝒙𝒚)
𝟐
.
𝟏
𝟐
( 𝒙𝒚)
−𝟏
𝟐⁄
. ( 𝒚 + 𝒙𝒚′)
Find Y’ If:
1. 𝒚 = 𝐜𝐨𝐬−𝟏
(𝐬𝐢𝐧(𝒙))
2. 𝒚 = √𝐥𝐧(𝒙 𝟑)
𝟑
3. 𝒚 =
𝒆 𝒙 + 𝟏
√ 𝟏 − 𝒙𝒆 𝒙
4. 𝒚 = 𝐬𝐢𝐧𝐡−𝟏( 𝐜𝐨𝐬𝐡( 𝒙))
Solution:
1. 𝒚′
=
−𝟏
√ 𝟏 − (𝐬𝐢𝐧(𝒙)) 𝟐
. 𝐜𝐨𝐬(𝒙)
2. 𝒚′
=
𝟏
𝟑
(𝐥𝐧(𝒙 𝟑
))
−𝟐
𝟑⁄
.
𝟏
𝒙 𝟑
. 𝟑𝒙 𝟐
3. 𝒚′
=
𝒆 𝒙 . √ 𝟏 − 𝒙𝒆 𝒙 − (𝒆 𝒙 + 𝟏) .
𝟏
𝟐
( 𝟏 − 𝒙𝒆 𝒙)
−𝟏
𝟐⁄
. (−𝒙𝒆 𝒙 – 𝒆 𝒙)
(√ 𝟏 − 𝒙𝒆 𝒙)
𝟐
4. 𝒚′
=
𝟏
√ 𝟏 + (𝐜𝐨𝐬𝐡 𝒙) 𝟐
. 𝐬𝐢𝐧𝐡(𝒙)

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Math lecture 4 Part 1

  • 1. Find Y’ If: 1. 𝒚 = 𝒙 𝒆√ 𝒙 2. 𝒚 = √𝐭𝐚𝐧−𝟏(𝒙 𝟐) 3. 𝒚 = 𝐬𝐢𝐧𝐡( 𝟏 + 𝒙 𝟏 − 𝒙 ) 𝟐 4. 𝒚 𝟐 + 𝐬𝐢𝐧−𝟏 √ 𝒙𝒚 Solution: 1. 𝒚′ = 𝒆√ 𝒙 + 𝒙𝒆√ 𝒙 . ( 𝟏 𝟐 𝒙 −𝟏 𝟐⁄ ) 2. 𝒚′ = 𝟏 𝟐 (𝐭𝐚𝐧−𝟏 (𝒙 𝟐 )) −𝟏 𝟐⁄ . 𝟏 𝟏 +(𝒙 𝟐) 𝟐 . 𝟐𝒙 3. 𝒚′ = 𝟐(𝐬𝐢𝐧𝐡( 𝟏 + 𝒙 𝟏 − 𝒙 )) . 𝐜𝐨𝐬𝐡( 𝟏 + 𝒙 𝟏 − 𝒙 ) . ( 𝟏 − 𝒙) − (−𝟏 − 𝒙) (𝟏 − 𝒙) 𝟐 4. 𝟐𝒚𝒚′ + 𝟏 √ 𝟏 − (√ 𝒙𝒚) 𝟐 . 𝟏 𝟐 ( 𝒙𝒚) −𝟏 𝟐⁄ . ( 𝒚 + 𝒙𝒚′) Find Y’ If: 1. 𝒚 = 𝐜𝐨𝐬−𝟏 (𝐬𝐢𝐧(𝒙)) 2. 𝒚 = √𝐥𝐧(𝒙 𝟑) 𝟑 3. 𝒚 = 𝒆 𝒙 + 𝟏 √ 𝟏 − 𝒙𝒆 𝒙 4. 𝒚 = 𝐬𝐢𝐧𝐡−𝟏( 𝐜𝐨𝐬𝐡( 𝒙)) Solution: 1. 𝒚′ = −𝟏 √ 𝟏 − (𝐬𝐢𝐧(𝒙)) 𝟐 . 𝐜𝐨𝐬(𝒙) 2. 𝒚′ = 𝟏 𝟑 (𝐥𝐧(𝒙 𝟑 )) −𝟐 𝟑⁄ . 𝟏 𝒙 𝟑 . 𝟑𝒙 𝟐
  • 2. 3. 𝒚′ = 𝒆 𝒙 . √ 𝟏 − 𝒙𝒆 𝒙 − (𝒆 𝒙 + 𝟏) . 𝟏 𝟐 ( 𝟏 − 𝒙𝒆 𝒙) −𝟏 𝟐⁄ . (−𝒙𝒆 𝒙 – 𝒆 𝒙) (√ 𝟏 − 𝒙𝒆 𝒙) 𝟐 4. 𝒚′ = 𝟏 √ 𝟏 + (𝐜𝐨𝐬𝐡 𝒙) 𝟐 . 𝐬𝐢𝐧𝐡(𝒙)