Algebra is one of the most feared topics in the CAT, causing unease in the minds of CAT aspirants for years. Polynomials of higher degree especially are a dreaded sight. In this CAT lesson on Descartes’ Rule of Signs, we shall uproot some of this fear for you.
Through this detailed CAT lesson by Magnus Prep’s Lead Instructor Anton Menezes, you will learn how to find the number of positive, negative and imaginary roots of polynomials in a jiffy. And with the use of two handpicked examples, you’ll have mastered this technique by the end of this video. So dive in and have fun prepping!
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Is d answer correct for 1st question…
Hi everyone! There's a correction at 10:15. It's 1± √3i, and not 1± 3i. Thanks to Sharada for pointing this out!