Toán Lớp 12: Dùng phương pháp đồ thị ,biện luận theo tham số m số nghiệm của phương trình x4 -2x21m

Question

Toán Lớp 12:  Dùng phương pháp đồ thị ,biện luận theo tham số m số nghiệm của phương trình  x^4 -2x^2+1+m, giúp em giải bài này ạ, em cảm ơn thầy cô và các bạn nhiều.

dantam45 · Answer

x  4   -  2   x  2   +  1  =  m   P  T  &#160;  l  &#224;  &#160;  P  T  &#160;  h  o  &#224;  n  h  &#160;  &#273;  &#7897;  &#160;  g  i  a  o  &#160;  &#273;  i  &#7875;  m  &#160;  c  &#7911;  a  &#160;  2  &#160;  &#273;  &#432;  &#7901;  n  g  :  &#160;  y  =   x  4   -  2   x  2   +  1  &#160;  v  &#224;  &#160;  y  =  m   X  &#233;  t  &#160;  y  =   x  4   -  2   x  2   +  1  ,  &#160;  T  X  &#272;  :  &#160;  D  =  R   y  '  =  4   x  3   -  4  x  =  0  &#60;  =  &#62;  x  =  0  ;  &#160;  x  =  &#177;  1   x  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  -  &#8734;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  -  1  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  0  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  1  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  +  &#8734;   y  '  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  -  &#160;  &#160;  &#160;  &#160;  0  &#160;  &#160;  &#160;  +  &#160;  &#160;  0  &#160;  &#160;  &#160;  -  &#160;  &#160;  0  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  &#160;  +   =  &#62;   x   C  T    =  &#177;  1  ;  &#160;   y   C  T    =  0    x   C  &#272;    =  0  ;  &#160;   y   C  &#272;    =  1     Hình minh hoạ:         K  h  i  &#160;  m  &#60;  0  &#160;  t  h  &#236;  &#160;  2  &#160;  &#273;  t  h  s  &#160;  k  h  &#244;  n  g  &#160;  c  &#243;  &#160;  &#273;  i  &#7875;  m  &#160;  c  h  u  n  g  =  &#62;  &#160;  P  T  &#160;  v  &#244;  &#160;  n  g  h  i  &#7879;  m   K  h  i  &#160;  m  =  0  =  &#62;  2  &#160;  &#273;  t  h  s  &#160;  c  &#243;  &#160;  2  &#160;  &#273;  i  &#7875;  m  &#160;  c  h  u  n  g  =  &#62;  P  T  &#160;  c  &#243;  &#160;  2  &#160;  n  g  h  i  &#7879;  m  &#160;  p  h  &#226;  n  &#160;  b  i  &#7879;  t   K  h  i  &#160;  m  =  1  =  &#62;  2  &#160;  &#273;  t  h  s  &#160;  c  &#243;  &#160;  3  &#160;  &#273;  i  &#7875;  m  &#160;  c  h  u  n  g  =  &#62;  P  T  &#160;  c  &#243;  &#160;  3  &#160;  n  g  h  &#7879;  m  &#160;  p  h  &#226;  n  &#160;  b  i  &#7879;  t   K  h  i  &#160;  m  &#62;  1  &#160;  =  &#62;  2  &#160;  &#273;  t  h  s  &#160;  c  &#243;  &#160;  2  &#160;  &#273;  i  &#7875;  m  &#160;  c  h  u  n  g  =  &#62;  P  T  &#160;  c  &#243;  &#160;  2  &#160;  n  g  h  &#7879;  m  &#160;  p  h  &#226;  n  &#160;  b  i  &#7879;  t

Toán Lớp 12: Dùng phương pháp đồ thị ,biện luận theo tham số m số nghiệm của phương trình x^4 -2x^2+1+m

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