Ashwini posted an Question
June 20, 2020 • 01:34 am 30 points
  • IIT JAM
  • Mathematics (MA)

Show +hoct he eguah on -1s+i=o hashoree soluhons in the intervau-4,4

show +hoct he eguah on -1S+I=o hashoree soluhons in the intervau-4,4

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  • Ashish sharma

    dear prabhupada, plz see the graph...it intersects at 3points

    cropped1726664994899597264.jpg
  • Prabhupada

    draw graph of y=x³ and y=15x-1 ... and then show that they intersect at exactly three points

  • comment-profile-img>
    Dhairya sharma

    see attached.

    cropped3409776289385056552.jpg
    eduncle-logo-app

    Verify that by plugging in the values, -4,-3,-2,-1,0,1,2,3 and 4. If the value changes from positive to negative, ( or negative to positive) then there's a root between those points.

  • Srinath

    Use the change of sign rule. Using that, you'll observe that there are two positive roots and one negative root. Verify that by plugging in the values, -4,-3,-2,-1,0,1,2,3 and 4. If the value changes from positive to negative, ( or negative to positive) then there's a root between those points.

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