\[\frac{\sin ky}{\sqrt{{\left(\sin kx\right)}^{2} + {\left(\sin ky\right)}^{2}}} \cdot \sin th\]

↓

\[\frac{\sin th}{1} \cdot \frac{\sin ky}{\sqrt{\left(\sin ky\right)^2 + \left(\sin kx\right)^2}^*}\]

Error

The X axis uses an exponential scale — Bits error versus `kx`

Derivation

Initial program 4.0
\[\frac{\sin ky}{\sqrt{{\left(\sin kx\right)}^{2} + {\left(\sin ky\right)}^{2}}} \cdot \sin th\]
Applied simplify2.4
\[\leadsto \color{blue}{\frac{\sin th \cdot \sin ky}{\sqrt{\left(\sin ky\right)^2 + \left(\sin kx\right)^2}^*}}\]
Using strategy rm
Applied *-un-lft-identity2.4
\[\leadsto \frac{\sin th \cdot \sin ky}{\color{blue}{1 \cdot \sqrt{\left(\sin ky\right)^2 + \left(\sin kx\right)^2}^*}}\]
Applied times-frac0.2
\[\leadsto \color{blue}{\frac{\sin th}{1} \cdot \frac{\sin ky}{\sqrt{\left(\sin ky\right)^2 + \left(\sin kx\right)^2}^*}}\]

Runtime

herbie shell --seed '#(1070227846 1561819246 480764335 4016816270 2602869839 2117310382)' +o rules:numerics
(FPCore (kx ky th)
  :name "Toniolo and Linder, Equation (3b), real"
  (* (/ (sin ky) (sqrt (+ (pow (sin kx) 2) (pow (sin ky) 2)))) (sin th)))