Calculus is a branch of mathematics that deals with the study of rates of change and accumulation of quantities. It includes topics such as limits, derivatives, and integrals. Advanced calculus, on the other hand, delves deeper into these concepts and explores more advanced topics such as multivariable calculus, vector calculus, and differential equations. Advanced calculus typically requires a stronger mathematical background and is more theoretical and abstract compared to basic calculus. **

A prime lens with a focal length between 35mm and 50mm is typically considered suitable for street photography. These lenses offer a natural field of view that closely resembles what the human eye sees, making them great for capturing candid moments in urban environments. Additionally, prime lenses are often compact and lightweight, which is ideal for street photographers who need to move quickly and discreetly. Overall, a 35mm or 50mm prime lens is a popular choice among street photographers for its versatility and ability to capture authentic moments. **

A macro lens is typically the best choice for product photography. Macro lenses are designed to capture small subjects with great detail and clarity, making them ideal for capturing the intricate details of products. They also have a close focusing distance, allowing you to get up close to the product for detailed shots. Additionally, a lens with a focal length between 50mm and 100mm is recommended for product photography as it provides a natural perspective and minimizes distortion. **

Calculus is a branch of mathematics that deals with the study of rates of change and accumulation. It is divided into two main branches: differential calculus, which focuses on the concept of the derivative and rates of change, and integral calculus, which deals with the concept of the integral and accumulation of quantities. Calculus is widely used in various fields such as physics, engineering, economics, and computer science to solve problems involving continuous change and motion. **

If you are struggling with calculus, don't worry, you are not alone. Many students find calculus to be a challenging subject due to its complex concepts and problem-solving techniques. It's important to seek help from your teacher, classmates, or a tutor to clarify any doubts and practice regularly to improve your understanding and skills in calculus. Remember, with dedication and perseverance, you can overcome the challenges and succeed in mastering calculus. **

Calculus can be difficult for some people, as it involves complex concepts and requires a strong understanding of algebra and trigonometry. However, with dedication and practice, many students are able to grasp the concepts and excel in calculus. It is important to seek help from teachers, tutors, or online resources if you are struggling with calculus, as it is a foundational subject for many fields of study, including engineering, physics, and economics. **

For animal photography, a camera with a fast autofocus system and high burst rate is essential to capture fast-moving subjects. A good choice would be a DSLR or mirrorless camera with at least 20 megapixels for high-quality images. As for the lens, a telephoto lens with a focal length of 70-200mm or longer is recommended to get close-up shots of animals without disturbing them. Additionally, a lens with image stabilization can help reduce camera shake when shooting handheld in low light conditions. **

For wildlife photography, a camera with a fast continuous shooting speed, high resolution, and good low-light performance is ideal. Cameras like the Canon EOS 90D, Nikon D500, or Sony Alpha a6600 are popular choices. When it comes to lenses, a telephoto lens with a focal length of at least 300mm is recommended to capture distant wildlife without disturbing them. Lenses like the Canon EF 100-400mm f/4.5-5.6L IS II, Nikon AF-S NIKKOR 200-500mm f/5.6E ED VR, or Sony FE 200-600mm f/5.6-6.3 G OSS are great options for wildlife photography. **