Solve for n & x

[nycmathguy]

 

[MathLover1]

1. where is that problem from? ...you cannot isolate variable n
all you can do is only solve for the variable t

2.
x^2(x^2+y^2)=y^2

y^2=x^4+x^2y^2

y^2-x^2y^2=x^4

y^2(1-x^2)=x^4

y^2=x^4/ (1-x^2)

y=sqrt(x^4/ (1-x^2))

y=sqrt(x^4)/sqrt( (1-x^2))

y= x^2/sqrt( (1-x^2))

 

[nycmathguy]

1. where is that problem from? ...you cannot isolate variable n
all you can do is only solve for the variable t

2.
x^2(x^2+y^2)=y^2

y^2=x^4+x^2y^2

y^2-x^2y^2=x^4

y^2(1-x^2)=x^4

y^2=x^4/ (1-x^2)

y=sqrt(x^4/ (1-x^2))

y=sqrt(x^4)/sqrt( (1-x^2))

y= x^2/sqrt( (1-x^2))

Problem 1 is from David Cohen's Precalculus 4th Edition textbook.

 

[MathLover1]

did you double check what to solve for? n or t

 

[nycmathguy]

did you double check what to solve for? n or t

For question 1, I copied down the right problem but wrong instructions. It should be Solve for P.

 

[MathLover1]

Solve for P

...............move P to the left and I to the right

 

[nycmathguy]

Solve for P

View attachment 3769 ...............move P to the left and I to the right

View attachment 3770

Why I didn't see that is too funny.