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MCR3U Exponential Functions

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  • October 12, 2022 at 5:58 pm #24004

    MLS Admin
    Keymaster

    A spotlight uses coloured gels to create the different colours of light required for a theatrical production. Each gel reduces the original intensity of the light by 3.6%. Write an equation that models the intensity of light, I, as a function of the number of gels used. Use your equation to determine the percent of light left if the three gels are used. Explain why this is an example of exponential decay.

    October 16, 2022 at 7:44 am #24135

    Na Yi
    Participant

    blob:https://mapleleafschool.ca/919d7ea7-1009-45e3-85bc-b35a1a356f48

    October 19, 2022 at 1:28 am #24252

    JIANCHEN ZHAO
    Participant

    /Users/cyndi/Desktop/截屏2022-10-19 09.22.44.png
    0.896 less than 1, so this is an example of exponential decay.

    October 19, 2022 at 1:28 am #24253

    JIANCHEN ZHAO
    Participant

    0.896 less than 1, so this is an example of exponential decay.

    October 27, 2022 at 5:45 pm #24660

    Administrator MLS
    Participant

    Hi students,
    You can solve the above question using the concept of exponential decay as each gel reduces the original intensity of the light. Use the formula with i=3.6%.

    I hope this hint helps. All the best!

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