22 下方以光學十字法表示的鏡片度數等同於下列何者?
(A)+3.00DS/-2.00DC×090 (B)+3.00DS/-2.00DC×180 (C)+1.00DS/-2.00DC×090 (D)+1.00DS/+2.00DC×180
(c) (4%)If the basis is γ, find the dimension of ker(T) and the basis of ker(T).