Sight Enhancement Systems SciPlus-2500, Руководство пользователя

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Page!24!of!35! ! version!1.2!
Calculating*values*of*f(x)*
Let’s!investigate!how!to!use!the!SciPlusB2500!in!functions!mode!by!evaluating!the!expression:!
y=a(x4b)
2
4c
!
1. Enter&functions&mode: !!First,!press!
f (x)
!to!enter!functions!mode.!!
2. Enter&the&equation: !Push!
f (x)
!two!more!times!to!access!the!“y=”!soft!key!(C),!and!push!it.!!The!
bottom!line!of!the!display!will!now!show!“y=”.!!Now!push!
f (x)
!again!to!get!back!to!the!variables!
list!a,!b,!c,!x.!!Enter!the!expression!as!follows,!using!the!soft!keys!ABD!!(note!that!‘D’!is!‘x’!in!this!
case),!as!follows:!
a × ( x - b ) y
x
2 - c
!
Once! you! press! the! !
↵
! ! key,! the! equation! will! be! displayed! in! the! top! line.! ! Of! course,! if! the!
equation!contains!a!syntax!error,!you!will!get!an!error!message!when!you!attempt!to!get!a!result.!
For!now,!the!middle!line!will!remain!blank.!
3. Entering&values&for&the&variables: !Push!
f
(x)
!again!so!that!the!soft!keys!show!“a=”,!“b=”,!etc.!!Now!
let’s!enter!specific!values!for!a,!b,!c!and!x!as!follows:!
a= 0.5
!
↵
b= 2
↵
c= TAN(45)
↵
x= -1
↵