There are actually only 2 solutions, since when you sub pi/2 into the equation, you get no solution. This is because tan(pi/2) does not exist (sub tan(pi/2) in your calculator and you will get math error).tanx -2 has 2 solutions in 2nd and 4th quadrant while sinx only has one answer pi/2 therefore 3
you get the pi/2 from the (sinx - 1) bracket, but in the end it doesnt matter since its undefined in the tan curveWhy do you need to tan (pi/2)? It was just inverse tan -2, which has two solutions
plus 1 solution for sine (pi/2)
Tan(pi/2) is undefined though, the tan curve
9/10 my streak has endedThere are actually only 2 solutions, since when you sub pi/2 into the equation, you get no solution. This is because tan(pi/2) does not exist (sub tan(pi/2) in your calculator and you will get math error).
But wolfram alpha says 3 solutions. If not, draw the diagram between 0 and 2pie and you will see 3 roots.9/10 my streak has ended
funny story, I originally thought tan had no solutions and sin had 2 so b was going to be my answer. and i realise i'm wrong with both my assumptions
yis im gud at meth
well if you were to draw the graph you'll plug in pi/2, you get an undefined y value. therefore i presumed those straight line sections are in fact asymptotes. therefore thats why i put 2 solutions.... quite worried for this as it is one of the two marks that are ambiguous with me.
problem is it all rides on this one and another answer (depending if they can read my writing) that will determine if i get 97-98 or 98-99, hopefully 7 is b and im in a real chance to get state rankIf 7 is C then i lost 2 marks for MC
if 7 is B then GG another mark gone :/
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The picture clearly shows 3 x intercepts, between 0 and 2pie, hence 3 solutions.
No, there is a chance at pi/2 there is an open circle, hence B would be the answer in this case.for fuck sakes, i did not see that coming, that nails the bloody cover on the coffin, it must be 3...
i put 3 initially but then was like tanpi/2 is undefined, i freaking hate multiple choice now.