Answer the perceptron in $[$Fig $3-4($b$)].$

$($a$)$ training set

$($D$)$ perceptron

$[$Fig $3-4]$ Example of perceptron operation using OR logic gate

$(1)$ When the value of $w_1$ and $w_2$ are fixed, what is the range of $w_0$ for the classification still $100\%$ correctly?

$(2)$ When the value of $w_0$ and $w_2$ are fixed, what is the range of $w_1$ for the classification still $100\%$ correctly?