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Formulas

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𝑓(π‘₯) = 𝑏 π‘₯ has inverse 𝑓 −1 (π‘₯) = π‘™π‘œπ‘”π‘ π‘₯
π‘™π‘œπ‘”10 π‘₯ = π‘™π‘œπ‘” π‘₯
π‘π‘Ž = 𝑐
π‘™π‘œπ‘”π‘’ π‘₯ = 𝑙𝑛 π‘₯
iff π‘™π‘œπ‘”π‘ 𝑐 = π‘Ž
π‘™π‘œπ‘”π‘ 𝑏 π‘₯ = π‘₯
𝑏 π‘™π‘œπ‘”π‘ π‘₯ = π‘₯
𝑏 𝑒 = 𝑏 𝑀 iff 𝑒 = 𝑀
π‘™π‘œπ‘”π‘ 𝑒 = π‘™π‘œπ‘”π‘ 𝑀 iff 𝑒 = 𝑀
If 𝑓(π‘₯) = 𝑏 π‘₯ then 𝑓(𝑒 + 𝑀) = 𝑓(𝑒)𝑓(𝑀) or
𝑏 𝑒+𝑀 = 𝑏 𝑒 𝑏 𝑀
bu
𝑓(𝑒)
If 𝑓(π‘₯) = 𝑏 π‘₯ then 𝑓(𝑒-𝑀) = 𝑓(𝑀) or
𝑏 𝑒-𝑀 = bw
If 𝑓(π‘₯) = 𝑏 π‘₯ then 𝑓(𝑒)𝑀 = 𝑓(𝑒𝑀) or
(𝑏 𝑒 )𝑀 = 𝑏 𝑒𝑀
If 𝑔(π‘₯) = π‘™π‘œπ‘”π‘ π‘₯ then 𝑔(𝑒𝑀) = 𝑔(𝑒) + 𝑔(𝑀) or
𝑒
π‘™π‘œπ‘”π‘ (𝑒𝑀) = π‘™π‘œπ‘”π‘ 𝑒 + π‘™π‘œπ‘”π‘ 𝑀
𝑒
If 𝑔(π‘₯) = π‘™π‘œπ‘”π‘ π‘₯ then 𝑔(𝑀) = 𝑔(𝑒) − 𝑔(𝑀)
or
If 𝑔(π‘₯) = π‘™π‘œπ‘”π‘ π‘₯ then 𝑔(𝑒𝑀 ) = 𝑀𝑔(𝑒)
π‘™π‘œπ‘”π‘ (𝑒𝑀 ) = 𝑀 π‘™π‘œπ‘”π‘ 𝑒
or
π‘™π‘œπ‘”π‘ (𝑀) = π‘™π‘œπ‘”π‘ 𝑒 − π‘™π‘œπ‘”π‘ 𝑀
π‘™π‘œπ‘” π‘₯
π‘Ž π‘₯ = 𝑏 π‘₯ π‘™π‘œπ‘”π‘ π‘Ž
π‘™π‘œπ‘”π‘Ž π‘₯ = π‘™π‘œπ‘”π‘ π‘Ž
𝑏
𝐼 = π‘ƒπ‘Ÿπ‘‘
𝐴 = 𝑃 + 𝐼 = 𝑃 + π‘ƒπ‘Ÿπ‘‘ = 𝑃(1 + π‘Ÿπ‘‘)
𝐴(𝑑) = 𝑃𝑒 π‘Ÿπ‘‘
𝑁(𝑑) = 𝑁0 𝑒 π‘˜π‘‘
𝑇(𝑑) = π‘‡π‘Ž + (𝑇0 − π‘‡π‘Ž )𝑒 −π‘˜π‘‘
𝐿
𝑁(𝑑) = 1+𝐢𝑒 −π‘˜πΏπ‘‘
𝐿
𝐢 =𝑁 −1
0
A(𝑑) = A0 𝑒 π‘˜π‘‘
π‘Ÿ
𝐴 = 𝑃(1 + 𝑛)𝑛𝑑
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