The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by:P(c)=−20(c−3)2+180Which currents will produce no power (i.e. 0 watts)?Enter the lower current first.Lower current: amperesHigher current: amperes
Q. The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by:P(c)=−20(c−3)2+180Which currents will produce no power (i.e. 0 watts)?Enter the lower current first.Lower current: amperesHigher current: amperes
Given power function: We are given the power function P(c)=−20(c−3)2+180. To find the currents that produce no power, we need to solve the equation P(c)=0.
Set equal and solve: Set the power function equal to zero and solve for c:0=−20(c−3)2+180
Move 180 and solve: Move 180 to the other side of the equation:−20(c−3)2=−180
Divide and isolate: Divide both sides by −20 to isolate the squared term:(c−3)2=9
Take square root: Take the square root of both sides to solve for c:c−3=±3
Solve for c: Solve for c by adding 3 to both possible values of the square root:c=3±3
Two solutions for c: This gives us two solutions for c:Lower current: c=3−3=0 amperesHigher current: c=3+3=6 amperes
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