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1. Use MATLAB to differentiate the following functions: \text { a. } y(x)=5 x^{3}-9 x+5 \text { b. } y(t)=5 t^{7}+2 t^{5}-3 t^{2}+10 \text { c. } f(t)=\sqrt{t}+\sqrt[3]{t}-2 \sqrt[4]{t} y=\frac{x^{2}+7}{2 x^{3}+5 x^{2}-4 x+9}

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