 <br><br><strong>Definition 8 (Right Trapezoidal)</strong>. From Definition 4, the <em>upper</em> or <em>right trapezoidal</em> MF, herein notated as <span class="math inline">\(\mu_{\bigtriangledown_{\uparrow}}\)</span>, is defined as follows: <span class="math display">\[\begin{equation}
    \mu_{\bigtriangledown_{\uparrow}}(x_{jk}):=\begin{cases}
        1,&amp;\mathrm{min}\leq x_{jk}\leq v_1\\
        \displaystyle\frac{\mathrm{max}-x_{jk}}{\mathrm{max}-\mathrm{min}},&amp;v_1&lt;x_{jk}\leq\mathrm{max}\\