Question 1(b) in MATH110(2017).

Hi Ziming,

Thanks for writing hints and solution for MATH 110 (2017) :)

For the question 01 (b), it would be great if you write more explanatory; Especially at the last line, adding more words as below would be really helpful for the student; In this problem, $g(x)=x^{2}+2x$ , $a=1$ , so g(a) = g(1) = ..... and g'(a)= g'(1)=.... Therefore, plugging these to tangent line formula, we have $y=3+4(x-1)=4x-1$ .