Learning Guide Learning Guide

subs( {2=9}, evalm(pwrs) );2.5 Basic Types of Maple Objects • 29⎡⎣1 1⎤19 4 8 ⎦3 9 27Not only does this cause the substitution to occur in the components asexpected, but full evaluation also displays the array’s elements, just aswhen you use the print command.> evalm(pwrs);⎡⎣1 1⎤12 4 8 ⎦3 9 27TablesA table is an extension of the concept of the array data structure. Thedifference between an array and a table is that a table can have anythingfor indices, not just integers.> translate := table([one=un,two=deux,three=trois]);translate := table([three = trois, one = un, two = deux])> translate[two];deuxAlthough at first they may seem to have little advantage over arrays,table structures are very powerful. Tables enable you to work with naturalnotation for data structures. For example, you can display the physicalproperties of materials using a Maple table.> earth_data := table( [ mass=[5.976*10^24,kg],> radius=[6.378164*10^6,m],> circumference=[4.00752*10^7,m] ] );