1. Find the derivatives with respect to 𝑥 of the following functions:
    1. (½ point) 𝑦 = 𝑥 + 1
    2. (1 point) 𝑦 = 𝑥³ + 4𝑥² − 𝑥 + 3
    3. (1½ point) 𝑦 = cos(𝑥²)