Using Vlookup formulas to populate an equation

yappsta

New Member
Joined
Jan 25, 2017
Messages
4
I have got five different power equation values from a log graph for different trend lines.

Which equation I apply depends on type of room I am calculating for.

Equation structure Y = mx^b

I have got m and c in a 1 table.

x is a parameter that varies in each of the other tables I am trying to calculate from.

I have tried a couple of different formulas but no good.

=IF(Y6="","",VLOOKUP(Y6,N18:Q21,3,FALSE)*AA6^(VLOOKUP(Y6,N18:Q21,4,FALSE)))

and

=SUMPRODUCT(Y6:Y9=N17:N21,P17:P21,AA6:AA9,Q17:Q21)

Example of tables, the first of which I have many to populate.

xanswer
t.10.55
t.20.77
t.30.99
t.41.211

<tbody>
</tbody>

The second one has the values I need to use for calculations
mb
t.10.150.43
t.20.20.38
t.30.250.33
t.40.3090.296
t.50.520.206

<tbody>
</tbody>


Any help would be most welcome.

Cheers
 

Excel Facts

Which Excel functions can ignore hidden rows?
The SUBTOTAL and AGGREGATE functions ignore hidden rows. AGGREGATE can also exclude error cells and more.

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