(6) Using the chain rule.
(11) The derivative is signum of the example.
(12) Using the chain rule.
(20) Using the chain rule.
(25) Using the chain rule.
(28) Using the chain rule.
(30) Using the chain rule and the reciprocal rule.
(34)Using the chain rule and the product rule.
(39) 1.Using the chain rule and the product rule.
2.Find an equation of the tangent line.
(40) Using the chain rule and the product rule.
1