Hello. I am new to this group and will try to explain two problems. Hope
you understand my poor english. My questions are probably easy for most
of you, so I hope someone will help :-)
I am making a spreadsheet where I have to use names not cell numbers
(can not use B1, C3 and so on). I shall use the f(X)=ax3 + bx2 + cx + d
formula (the number 3 and 2 are exponents -if that is what is it called).
I am going to write a start value (lets name the cell Start), a step
value (Step) and a,b,c and d. The last four cells are named a, b, c_ and
d. All this is quite all right but i am going to calculate the formula
in 30 steps where the step value changes the value of the Start value
with the value i wrote (ex if Step is 0,2 the Start value increases with
0,2 each step down the colum - from lets say -4 to pluss 1,8). I have
the start value in a column on the left of the column with the
calculation. Okey so if I could use the cell numbers it would be easy.
But as it is now I have not found a solution. If I could start by using
start+step*0 in the formula and then autoincrease the one number with
1 when copying the formula down the colum i would be saved. But I can
not find a way to do this. Can anyone help ( or suggest another
solution) I would be really pleased.
I am going to write a program to calculate tax groups. I must use the IF
sentence and the whole calculation is going to be made in the one
formula. The problem is as follows. If the input is, lets say, up to
20000 there is no extra tax (answer is 0), if you earn more than 20000
and up to 30000 there should be calculated 13,5% tax on the value
between 20000 and 30000. If you earn More than 30000 you must pay 19,8%
tax of the sum above 30000 and of course 13,5% of the 10000 between 2000
and 30000. I have the formulas (I think) Taxes=(income-20000)*13,5%
(between 20000 and 30000) and Taxes=10000*13,5% + (income-30000)*19,5%
(above 30000) but I am uncertain on how to use the IF sentence to solve
it all in one fomula (or one cell). Can anyone help.