The correct answer is tissue samples and cells.
The compound light microscope's main feature is the light source, so it is considered a bright field microscope. Invented back in 1595 by Zacharias Jansen, this type of microscope is still the most widely used type of microscope because of its price, but also because of its convenience with viewing bacteria colonies, browsing their movement, analyzing tissue samples, counting and analyzing the content acquired from smears, analyzing cells in a blood sample etc. Its magnifying power is from 4x to 4000x. Other structures which require larger magnifying power, are analyzed with an electron microscope.
The structures that are responsible for producing semen are within the make reproductive system. these include the testes, epidymus, prostate, seminal vesicles, and the bulbourethral gland.
Answer:
Explanation:
To differentiate: 
Solution:
Use product rule: ![[f(x)g(x)]'=f'(x)g(x)+f(x)g'(x)](https://tex.z-dn.net/?f=%5Bf%28x%29g%28x%29%5D%27%3Df%27%28x%29g%28x%29%2Bf%28x%29g%27%28x%29)
and the following formulae:
![(10\,sinx\,\,cos x)'=10[(sinx)'cosx+(sinx)(cosx)']\\\\=10[cosx\,cosx-sinx\,sinx]\\\\=10[cos^2x-sin^2x]](https://tex.z-dn.net/?f=%2810%5C%2Csinx%5C%2C%5C%2Ccos%20x%29%27%3D10%5B%28sinx%29%27cosx%2B%28sinx%29%28cosx%29%27%5D%5C%5C%5C%5C%3D10%5Bcosx%5C%2Ccosx-sinx%5C%2Csinx%5D%5C%5C%5C%5C%3D10%5Bcos%5E2x-sin%5E2x%5D)
Use 
