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Yahoo!Best ResponseYou've already chosen the best response.0
@hartnn @satellite73 @RadEn
 one year ago

satellite73Best ResponseYou've already chosen the best response.0
graph em they don't intersect
 one year ago

hbaBest ResponseYou've already chosen the best response.0
http://www.wolframalpha.com/input/?i=9x%5E2++30x+%2B+37+%3D+9sin2x Have a look at this.
 one year ago

Yahoo!Best ResponseYou've already chosen the best response.0
Is there any way to find it manually i mean...With out Graph...:)
 one year ago

TaufiqueBest ResponseYou've already chosen the best response.2
yes there is a way to find the number of real solution of given equation::: step1: let y=9x^2  30x + 37 step2: and let y=9sin2x step 3: plot the graph of both equation in the same axis .. step 4: the point of intersection of the both curve will give the number of real solution of the given equation..
 one year ago

tkhunnyBest ResponseYou've already chosen the best response.0
Complete the square on the left hand side. What is the minimum value of that expression?
 one year ago

satellite73Best ResponseYou've already chosen the best response.0
that wont quite do it
 one year ago

satellite73Best ResponseYou've already chosen the best response.0
oh yes it will, sorry
 one year ago

TaufiqueBest ResponseYou've already chosen the best response.2
y=9x^2  30x + 37 this is the eqn of parabola so draw the graph of this parabola. and y=9sin2x is a sine curve which maximum value will be 9 and minimum value will be 9 .and also draw it.
 one year ago

satellite73Best ResponseYou've already chosen the best response.0
@tkhunny has a method without the graph min is too large,
 one year ago

satellite73Best ResponseYou've already chosen the best response.0
but this will not work in general, because it could be that the min value of the parabola is less that the max of the sine curve, but they still could not intersect
 one year ago

tkhunnyBest ResponseYou've already chosen the best response.0
True. I thought it might be a good first clue.
 one year ago

TaufiqueBest ResponseYou've already chosen the best response.2
\[12\le9x ^{2}30x+37\] and \[9 \le \sin 2x \le 9\] wee see that te two curve will never intersect to each other
 one year ago

tkhunnyBest ResponseYou've already chosen the best response.0
@Taufique typo. "9*" missing from the sine expression.
 one year ago

TaufiqueBest ResponseYou've already chosen the best response.2
ohh sorry ..yes ,9 is missing in the above equation
 one year ago
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