SOLUTIONS TO DIFFERENTIATION OF FUNCTIONS USING THE QUOTIENT RULE



SOLUTION 1 : Differentiate tex2html_wrap_inline695 .

Then

tex2html_wrap_inline697

tex2html_wrap_inline699

tex2html_wrap_inline701 .

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SOLUTION 2 : Differentiate tex2html_wrap_inline703 .

Then

tex2html_wrap_inline705

tex2html_wrap_inline707

tex2html_wrap_inline709

tex2html_wrap_inline711

tex2html_wrap_inline713 .

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SOLUTION 3 : Differentiate tex2html_wrap_inline715 .

Then

tex2html_wrap_inline717

tex2html_wrap_inline719

tex2html_wrap_inline721

tex2html_wrap_inline723

tex2html_wrap_inline725 .

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SOLUTION 4 : Differentiate tex2html_wrap_inline727 .

Then

tex2html_wrap_inline729

tex2html_wrap_inline731

tex2html_wrap_inline733

tex2html_wrap_inline735

tex2html_wrap_inline737

(Recall the well-known trigonometry identity tex2html_wrap_inline739 .)

tex2html_wrap_inline741

tex2html_wrap_inline743 .

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SOLUTION 5 : Differentiate tex2html_wrap_inline745 .

Then

tex2html_wrap_inline747

tex2html_wrap_inline749

tex2html_wrap_inline751

tex2html_wrap_inline753

tex2html_wrap_inline755

tex2html_wrap_inline757 .

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SOLUTION 6 : Differentiate tex2html_wrap_inline759 .

Then

tex2html_wrap_inline761

tex2html_wrap_inline763

tex2html_wrap_inline765

tex2html_wrap_inline767

tex2html_wrap_inline769

(Begin to simplify the final answer by getting a common denominator in the numerator.)

tex2html_wrap_inline771

tex2html_wrap_inline773

tex2html_wrap_inline775 .

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SOLUTION 7 : Differentiate tex2html_wrap_inline777 .

Then

tex2html_wrap_inline779

(Recall that tex2html_wrap_inline781 .)

tex2html_wrap_inline783

tex2html_wrap_inline785

(Recall that tex2html_wrap_inline787 and tex2html_wrap_inline789 .)

tex2html_wrap_inline791

tex2html_wrap_inline793

tex2html_wrap_inline795

(Recall that tex2html_wrap_inline797 .)

tex2html_wrap_inline799 .

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SOLUTION 8 : Differentiate tex2html_wrap_inline801 .

Then

tex2html_wrap_inline803

tex2html_wrap_inline805

tex2html_wrap_inline807

(Factor 2x and tex2html_wrap_inline811 from the numerator.)

tex2html_wrap_inline813

tex2html_wrap_inline815

tex2html_wrap_inline817

tex2html_wrap_inline819

tex2html_wrap_inline821 .

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SOLUTION 9 : Consider the function tex2html_wrap_inline823. Evaluate tex2html_wrap_inline825. Use the quotient rule to find the derivative of f . Then

tex2html_wrap_inline829

(Recall that tex2html_wrap_inline831 and tex2html_wrap_inline833.)

tex2html_wrap_inline835

tex2html_wrap_inline837

tex2html_wrap_inline839

(Factor tex2html_wrap_inline841 from the numerator.)

tex2html_wrap_inline843

tex2html_wrap_inline845 .

Finally,

tex2html_wrap_inline847

tex2html_wrap_inline849

(Recall that tex2html_wrap_inline851 and tex2html_wrap_inline853.)

tex2html_wrap_inline855

tex2html_wrap_inline857

tex2html_wrap_inline859

tex2html_wrap_inline861 .

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SOLUTION 10 : Differentiate tex2html_wrap_inline863 . Apply the quotient rule first. Then

tex2html_wrap_inline865

(Apply the product rule in the first part of the numerator.)

tex2html_wrap_inline867

tex2html_wrap_inline869

tex2html_wrap_inline871

(Factor tex2html_wrap_inline873 from inside the brackets.)

tex2html_wrap_inline875

(Now factor tex2html_wrap_inline873 from the numerator.)

tex2html_wrap_inline879

tex2html_wrap_inline881

tex2html_wrap_inline883 .

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SOLUTION 11 : Differentiate tex2html_wrap_inline885 . Apply the quotient rule first. Then

tex2html_wrap_inline887

(Now apply the product rule in the first part of the numerator.)

tex2html_wrap_inline889

tex2html_wrap_inline891

tex2html_wrap_inline893

(Factor 2x and tex2html_wrap_inline897 from inside the brackets.)

tex2html_wrap_inline899

(Factor tex2html_wrap_inline901, and tex2html_wrap_inline903 from the numerator.)

tex2html_wrap_inline905

tex2html_wrap_inline907

tex2html_wrap_inline909

tex2html_wrap_inline911 .

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Duane Kouba
Wed Jul 30 20:10:53 PDT 1997