Maths question on making the subject

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Homework Help Overview

The discussion revolves around algebraic manipulation, specifically making certain variables the subject of equations. The original poster presents equations involving variables A, B, C, D, and E, seeking assistance in rearranging them.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to isolate B in the equation A = 1/2 B (C - D) ^2 and questions the correctness of their manipulation. They also inquire about making D and C the subjects in similar equations.
  • Some participants seek clarification on the interpretation of the original equation, questioning whether it should be expressed in different forms.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the equations and seeking clarity on the original poster's intentions. There is no explicit consensus yet, but the dialogue is focused on understanding the algebraic relationships involved.

Contextual Notes

The original poster notes that the variables used are not the actual ones from their question, which may imply additional context or constraints that are not fully disclosed.

questions_uk
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Hi.

A = 1/2 B (C - D) ^2

And I wanted to make B the subject

I have done:

2 x B = (C - D) ^ 2 / A

B = ( (C - D ^ 2) / A) / 2

Is this correct or not? And if not could you please amend it to make B the subject?

These are not the actual variables in the question by the way.


Also, how would I make D the subject in:

A = 1/2 B (C - D) ^2

Any help is appreciated. Thanks.
 
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And one last question,
How would I make

C the subject in:

A = B / ( C x D x E) x gradient?
 
Hi questions_uk! :smile:

(try using the X2 tag just above the Reply box :wink:)
questions_uk said:
A = 1/2 B (C - D) ^2

Do you mean A = B(C - D)2/2,

or A = (C - D)2/2B ? :confused:
 
Hi.

From A = 1/2 B (C-D)2

And making B the subject.
 
When someone asks for clarification, do NOT just repeat the original post!

Please answer the question! Is that
A= 1/(2B(C-D)^2) or A= (1/2)B(C-D)^2 ?
 

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