orK rK MAAI ANENCA Tutonial: Problem Thas problem demmonsteates how you enter fa

Question

orK rK MAAI ANENCA Tutonial: Problem Thas problem demmonsteates how you enter fanction anowers into WeBWeek First ent" " fnctan sinwhen-ing the fanton, you should entm umis), but WeBworK will aho accept san xormn sam. Iryou re yor n welwaK will accept this or my odelaction equal to saLe g·m(x) + san(x)..2.coor-2 1 We sand you should ester sinl) even though Well Work will also accept sis x or even sunx because you are less kely to make a mistake. Try entering sin2x) wthout tht estbese, and you My be surprsed at what you pet Use Prenew-on see what you get weBworK will n.lue fxtons (such-·m) Now entes the mcio 2cos Note thus is a fanction of t and mo . Try emering 2cos x and see what happen Note: You canear partial credit on shis problem You hne untumtnd attempts eman Hon 6 0

Explanation / Answer

Whenwe enter sinx the web understand sin(x) which is same as -cos(x+pi/2)

Now when we write sin2x the web understand sin(2x)=2sinxcosx=2sin(x)*cos(x)

but when we write sin2*x then web understand sin2 multiply x= x*sin2=x*2sin1cos1=2x*sin(1)cos(1)

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