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3. Write an operator that computes a polynomial at some point. (That is, it substitutes a value for x.) ($$) :: (Num a, Eq a) => Poly a -> a -> a For example: >P [-1,0,1] $S 3 > P [12] $$ e 12 > P [e,0,0,1] $$ (-2) -8

3. Write an operator that computes a polynomial at some point. (That is, it substitutes a value for x.) ($$) :: (Num a, Eq a) => Poly a -> a -> a For example: >P [-1,0,1] $S 3 > P [12] $$ e 12 > P [e,0,0,1] $$ (-2) -8

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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3. Write an operator that computes a polynomial at some point. (That is, it substitutes a value for x.) ($$) : (Num a, Eq a) => Poly a -> a -> a For example: > P [-1,0,1] $$ 3 > P [12] $$ e 12 > P [e,0,0,1] s$ (-2) -8 Your implementations of scale and $$ should have this property: scale n p $$ x == n (p $$ x)
Transcribed Image Text:3. Write an operator that computes a polynomial at some point. (That is, it substitutes a value for x.) ($$) : (Num a, Eq a) => Poly a -> a -> a For example: > P [-1,0,1] $$ 3 > P [12] $$ e 12 > P [e,0,0,1] s$ (-2) -8 Your implementations of scale and $$ should have this property: scale n p $$ x == n (p $$ x)
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