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How do you acos((b3^2+b4^2-b2^2)/(2*b3*b4)) in partial fractions?

An expression to simplify:

The solution

You have entered [src]
    /  2     2     2\
    |b3  + b4  - b2 |
acos|---------------|
    \    2*b3*b4    /
$$\operatorname{acos}{\left(\frac{- b_{2}^{2} + \left(b_{3}^{2} + b_{4}^{2}\right)}{2 b_{3} b_{4}} \right)}$$
acos((b3^2 + b4^2 - b2^2)/(((2*b3)*b4)))
General simplification [src]
    /  2     2     2\
    |b3  + b4  - b2 |
acos|---------------|
    \    2*b3*b4    /
$$\operatorname{acos}{\left(\frac{- b_{2}^{2} + b_{3}^{2} + b_{4}^{2}}{2 b_{3} b_{4}} \right)}$$
acos((b3^2 + b4^2 - b2^2)/(2*b3*b4))
Fraction decomposition [src]
acos(b3/(2*b4) + b4/(2*b3) - b2^2/(2*b3*b4))
$$\operatorname{acos}{\left(- \frac{b_{2}^{2}}{2 b_{3} b_{4}} + \frac{b_{3}}{2 b_{4}} + \frac{b_{4}}{2 b_{3}} \right)}$$
    /                  2  \
    | b3     b4      b2   |
acos|---- + ---- - -------|
    \2*b4   2*b3   2*b3*b4/
Numerical answer [src]
acos((b3^2 + b4^2 - b2^2)/(((2*b3)*b4)))
acos((b3^2 + b4^2 - b2^2)/(((2*b3)*b4)))
Rational denominator [src]
    /  2     2     2\
    |b3  + b4  - b2 |
acos|---------------|
    \    2*b3*b4    /
$$\operatorname{acos}{\left(\frac{- b_{2}^{2} + b_{3}^{2} + b_{4}^{2}}{2 b_{3} b_{4}} \right)}$$
acos((b3^2 + b4^2 - b2^2)/(2*b3*b4))
Trigonometric part [src]
    /  2     2     2\
    |b3  + b4  - b2 |
acos|---------------|
    \    2*b3*b4    /
$$\operatorname{acos}{\left(\frac{- b_{2}^{2} + b_{3}^{2} + b_{4}^{2}}{2 b_{3} b_{4}} \right)}$$
acos((b3^2 + b4^2 - b2^2)/(2*b3*b4))
Common denominator [src]
    /                  2  \
    | b3     b4      b2   |
acos|---- + ---- - -------|
    \2*b4   2*b3   2*b3*b4/
$$\operatorname{acos}{\left(- \frac{b_{2}^{2}}{2 b_{3} b_{4}} + \frac{b_{3}}{2 b_{4}} + \frac{b_{4}}{2 b_{3}} \right)}$$
acos(b3/(2*b4) + b4/(2*b3) - b2^2/(2*b3*b4))
Combining rational expressions [src]
    /  2     2     2\
    |b3  + b4  - b2 |
acos|---------------|
    \    2*b3*b4    /
$$\operatorname{acos}{\left(\frac{- b_{2}^{2} + b_{3}^{2} + b_{4}^{2}}{2 b_{3} b_{4}} \right)}$$
acos((b3^2 + b4^2 - b2^2)/(2*b3*b4))
Powers [src]
    /  2     2     2\
    |b3  + b4  - b2 |
acos|---------------|
    \    2*b3*b4    /
$$\operatorname{acos}{\left(\frac{- b_{2}^{2} + b_{3}^{2} + b_{4}^{2}}{2 b_{3} b_{4}} \right)}$$
    /  2     2     2\
    |b3    b4    b2 |
    |--- + --- - ---|
    | 2     2     2 |
acos|---------------|
    \     b3*b4     /
$$\operatorname{acos}{\left(\frac{- \frac{b_{2}^{2}}{2} + \frac{b_{3}^{2}}{2} + \frac{b_{4}^{2}}{2}}{b_{3} b_{4}} \right)}$$
acos((b3^2/2 + b4^2/2 - b2^2/2)/(b3*b4))
Combinatorics [src]
    /                  2  \
    | b3     b4      b2   |
acos|---- + ---- - -------|
    \2*b4   2*b3   2*b3*b4/
$$\operatorname{acos}{\left(- \frac{b_{2}^{2}}{2 b_{3} b_{4}} + \frac{b_{3}}{2 b_{4}} + \frac{b_{4}}{2 b_{3}} \right)}$$
acos(b3/(2*b4) + b4/(2*b3) - b2^2/(2*b3*b4))