HP 10413 Datasheet download pdf (Page 119)

119

Move the cursor near to the left hand

intersection and then change back to the NUM

view. When you do so, the approximate value

you chose with the cursor is transferred as

your first ‘guess’.

Now press and you will see the hp 39g+

find the nearest solution to your guess. Finish

by pressing to verify that the solution is

valid. See page 114 regarding this.

Obviously the next step is to change back to

the PLOT view, move the cursor near to the

second intersection and for that one too.

If we now change the active variable then there is an immediate change in

the PLOT view to reflect this.

Change back to the NUM view and restore the

variables to the original values, this time

leaving the highlight on C.

Since the active variable is now C, substitution

of all other values means that

*5*AB C B+=⋅

becomes 04 05C⋅+ =⋅. In this case both sides

are linear and this is shown in the PLOT view.

Notice that the axis label is now C. This would

have only one solution and there would be no

need to supply any particular starting value.

If we duplicate this process for A then

substitution of values means that

*5*AB C B+=⋅ becomes

105A−=⋅

. Both

sides are still linear, although not the same as

before, and this is shown in the PLOT view.

Notice that the axis label is now A.

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HP 10413 Datasheet Page 119