To solve the problem, we need to create an IF function using the Formula tab and the Insert Function dialog box in a spreadsheet (e.g., Microsoft Excel) to calculate depreciation based on the total cost of the machine excluding installation charges.
1. Understanding the Condition:
We are told:
2. Steps to Use the IF Function via the Formula Tab:
A2 > 200000).A2*20%).A2*10%).3. Syntax of the IF Function:=IF(A2>200000, A2*20%, A2*10%)
Here, A2 represents the cell containing the total cost (excluding installation charges).
Final Answer:
The IF function is created using the Formula tab and dialog box, and the result is given by the syntax:=IF(A2>200000, A2*20%, A2*10%)

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?