2.2.48 Derivatives and Differentials
Condition: Find the derivatives of functions: 1) \ (y = x \ Operatorname {arccot}^{2} (3 x) \), 2) \ (y = \ cos \ left (x^{4+9 x} \ right) \))
Calculation of derivatives and differentials of first and Higher Orders of Function of One and Many Varia Bybles, Including Partial Derivatives.