Lensmaker's Equation

[nycmathguy]

College Algebra
Section R.7

Let me see. To express f as a rational expression means to solve for f or isolate f. Yes? We then evaluate at the given values.

 

[MathLover1]

yes , plug in given values and solve for f

 

[nycmathguy]

yes , plug in given values and solve for f

Do I solve for f before evaluating at the given values?

 

[MathLover1]

will be easier to use given values then solve for f

 

[nycmathguy]

will be easier to use given values then solve for f

Ok. Will do as you say. This ends Section R.7. Thanks again.