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Apply the formula: $\frac{d}{dx}\left(ab\right)$$=\frac{d}{dx}\left(a\right)b+a\frac{d}{dx}\left(b\right)$, where $d/dx=\frac{d}{dx}$, $ab=\left(1-\ln\left(\mathrm{sech}\left(-4x\right)\right)\right)\mathrm{sech}\left(-4x\right)$, $a=\mathrm{sech}\left(-4x\right)$, $b=1-\ln\left(\mathrm{sech}\left(-4x\right)\right)$ and $d/dx?ab=\frac{d}{dx}\left(\left(1-\ln\left(\mathrm{sech}\left(-4x\right)\right)\right)\mathrm{sech}\left(-4x\right)\right)$
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$\frac{d}{dx}\left(\mathrm{sech}\left(-4x\right)\right)\left(1-\ln\left(\mathrm{sech}\left(-4x\right)\right)\right)+\frac{d}{dx}\left(1-\ln\left(\mathrm{sech}\left(-4x\right)\right)\right)\mathrm{sech}\left(-4x\right)$
Learn how to solve problems step by step online. d/dx(sech(-4x)(1-ln(sech(-4x)))). Apply the formula: \frac{d}{dx}\left(ab\right)=\frac{d}{dx}\left(a\right)b+a\frac{d}{dx}\left(b\right), where d/dx=\frac{d}{dx}, ab=\left(1-\ln\left(\mathrm{sech}\left(-4x\right)\right)\right)\mathrm{sech}\left(-4x\right), a=\mathrm{sech}\left(-4x\right), b=1-\ln\left(\mathrm{sech}\left(-4x\right)\right) and d/dx?ab=\frac{d}{dx}\left(\left(1-\ln\left(\mathrm{sech}\left(-4x\right)\right)\right)\mathrm{sech}\left(-4x\right)\right). The derivative of a sum of two or more functions is the sum of the derivatives of each function. Apply the formula: \frac{d}{dx}\left(cx\right)=c\frac{d}{dx}\left(x\right). Apply the formula: \frac{d}{dx}\left(\ln\left(x\right)\right)=\frac{1}{x}\frac{d}{dx}\left(x\right).
