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Change of subject of formulae

Ask by Ball Clark. in Nigeria
Mar 15,2025

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Answer

To change the subject of a formula, rearrange the equation to isolate the desired variable using algebraic operations like adding, subtracting, multiplying, dividing, or applying inverse functions.

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The Deep Dive

Changing the subject of a formula is a nifty math skill that allows you to solve for different variables. Imagine you're working with the formula for the area of a rectangle, A = l × w. If you're keen on finding the width (w), you can rearrange the formula to w = A/l. Flip those variables around just like it’s a dance party on paper, and you can unwrap the secret value of the variable you desire! In practice, this technique is super handy! Engineers and scientists frequently rearrange equations to solve for unknowns—this is especially true in physics when you're fiddling with formulas like F = ma (Force = mass × acceleration). By shifting things around, you might find yourself solving for mass (m = F/a) or acceleration (a = F/m)—essential for designing rockets or measuring speeds! Just remember to keep your mathematical operations balanced as you shimmy those variables for the correct answers!

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