Why does Δ(BA) = AΔ(B) when A is constant? Is there a proof for this algebra? Thanks
Jan 13, 2021 #1 pkc111 216 26 Homework Statement At what average rate does the magnetic field need to change to induce emf of 1.0 V. See attachment question 1. Relevant Equations See attachment solution. Why does Δ(BA) = AΔ(B) when A is constant? Is there a proof for this algebra? Thanks Attachments Question 1.png 4.5 KB · Views: 75 Solution.png 24.3 KB · Views: 70
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Jan 13, 2021 #2 haruspex Science Advisor Homework Helper Insights Author Gold Member 2022 Award 40,251 9,272 Δ(AB) = (A+ΔA)(B+ΔB)-AB = AΔB+BΔA+ΔAΔB. If A constant then ΔA=0, leaving only AΔB.
