Question 1

What is Doubtclip?

Accepted Answer

Doubtclip is an AI tutor that turns any homework or exam doubt into a step-by-step whiteboard video lesson with diagrams, formulas, and voice explanation.

Question 2

Who is the founder of Doubtclip?

Accepted Answer

Vinay Malav is the founder of Doubtclip (Founder, Doubtclip, based in Kota, Rajasthan, India). More: https://www.doubtclip.com/about

Question 3

Which subjects and exams does it support?

Accepted Answer

It supports Physics, Chemistry, Mathematics/Calculus and related STEM doubts for school boards, JEE, NEET, and global high-school / undergrad practice.

Question 4

How do I get a video solution?

Accepted Answer

Upload a photo of the question or paste the text, sign in, and Doubtclip generates a whiteboard-style explanation video you can watch and share.

Question 5

Is Doubtclip available worldwide?

Accepted Answer

Yes. Doubtclip is a web app for students globally. Lessons are available in English and Hinglish.

The trace of a square matrix is defined to be the sum of its diagonal entries. If $A$ is a $2 \times 2$ matrix such that the trace of $A$ is 3 and the trace of $A^{3}$ is -18 , then what is the value of the determinant of $A$ ?

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The trace of a square matrix is defined to be the sum of its diagonal entries. If AAA is a 2×22 \times 22×2 matrix such that the trace of AAA is 3 and the trace of A3A^{3}A3 is -18 , then what is the value of the determinant of AAA?

Need a video for this idea?

The trace of a square matrix is defined to be the sum of its diagonal entries. If $A$ is a $2 \times 2$ matrix such that the trace of $A$ is 3 and the trace of $A^{3}$ is -18 , then what is the value of the determinant of $A$ ?