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【单选题】
If f(1)=2, f(2)=3, and f(4)=5.9, then in the Lagrange difference polynomial, the coefficient of x^2 is
A.
0.25
B.
0.15
C.
0.55
D.
1.3
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Grammar can be divided into four types: Type 0, type 1, type 2 and type 3. The type 1 grammar is ( ).
A.
Phrasal grammar
B.
Regular grammar
C.
Context-sensitive grammar
D.
Context-free grammar
【单选题】In canonical reduction, reducible strings are characterized by ().
A.
immediate phrase
B.
handle
C.
Production
D.
token
【单选题】In each reduction step, a substring matches the () of a production, and then replaces the substring with the () symbol of that production.
A.
Right, left
B.
Right, right
C.
Left right
D.
Left left
【单选题】Chomsky divides grammars into four types, and the most descriptive grammar ().
A.
Type 0
B.
Type 1
C.
Type 2
D.
Type 3
