Using the definition, calculate the derivative of the function. Then find the values of the derivative as specified. \( g(t)=\frac{9}{t^{4}} ; g^{\prime}(-4), g^{\prime}(2), g^{\prime}(\sqrt{5}) \)

What is the LCM of 15 and 20 ? \( \begin{array}{llll}415 & \text { B } 20 & \text { C } 60 & \text { D } 45\end{array} \)

Find \( \int \cos ^{4} x d x \)

Rango grupo \( \mathrm{B}: \) Media aritmética grupo \( \mathrm{B}: \) Desviación media grupo \( \mathrm{B}: \)

midpoint given the endpoints: \( (-1,5) \) and \( (-7,-7) \)

7. What the number that measures an object's resistance to being deformed elastically when stress is applied to it? a) Elastic modulus b) Plastic modulus c) Poisson's ratio d) Stress modulus 8. The law which states that within elastic limits strain produced is proportional the stress producing it is known as a) Bernoulli's law b) Hooke's law d) Poisson's law 9. What is Hooke's law? b) The relation between normal stress and corresponding strain b) The relation between shear stress and corresponding strain d) None of the mentioned.