# Technical Studies Reference

### KDJ

This study calculates and displays the same Subgraphs that are displayed in the KD - Slow study. In addition to those, this study calculates and displays the J line. The KDJ study is named after the lines Slow %K, Slow %D, and J. Simply put, the J line is computed as J = 3*(Slow %K) - 2*(Slow %D). In our notation it is expressed as follows.

$$J_t(X^{(High)},X^{(Low)},X^{(Close)},n_{FastK},n_{FastD},n_{SlowD}) = 3 \cdot Slow\% K_t(X^{(High)},X^{(Low)},X^{(Close)},n_{FastK},n_{FastD}) - 2 \cdot Slow\% D_t(X^{(High)},X^{(Low)},X^{(Close)},n_{FastK},n_{FastD},n_{SlowD})$$