There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
Note that variables are case sensitive.\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ arctan(4.05{(\frac{1}{cosh(\frac{2.4(X - 27.19)}{25} - 1.2)})}^{2}(\frac{1.2}{25}) - 5.7{(\frac{1}{cosh(\frac{2.4(X - 56.46)}{21.95} - 1.2)})}^{2}(\frac{1.2}{21.95}))\ with\ respect\ to\ x:\\\end{split}\end{equation} \]
\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = arctan(\frac{0.1944}{cosh(0.096X - 3.81024)} - \frac{0.311617312072893}{cosh(0.109339407744875X - 7.37330296127563)})\\&\color{blue}{The\ first\ derivative\ function:}\\&\frac{d\left( arctan(\frac{0.1944}{cosh(0.096X - 3.81024)} - \frac{0.311617312072893}{cosh(0.109339407744875X - 7.37330296127563)})\right)}{dx}\\=&(\frac{(\frac{0.1944*-sinh(0.096X - 3.81024)(0 + 0)}{cosh^{2}(0.096X - 3.81024)} - \frac{0.311617312072893*-sinh(0.109339407744875X - 7.37330296127563)(0 + 0)}{cosh^{2}(0.109339407744875X - 7.37330296127563)})}{(1 + (\frac{0.1944}{cosh(0.096X - 3.81024)} - \frac{0.311617312072893}{cosh(0.109339407744875X - 7.37330296127563)})^{2})})\\=&0\\ \end{split}\end{equation} \]Your problem has not been solved here? Please go to the Hot Problems section!