A quadratic function is one of the form f(x)=ax2 + bx + c, qhov twg a, b, thiab c yog cov lej uas tsis sib npaug rau xoom. Daim duab ntawm ib qho kev ua quadratic yog qhov nkhaus hu ua parabola.
Cov piv txwv ntawm kev ua haujlwm plaub yog dab tsi?
Quadratic Function Definition
Cia peb saib ob peb yam piv txwv ntawm quadratic functions: f(x)=2x2 + 4x - 5 ; Luas a=2, b=4, c=-5. f(x)=3x2 - 9; AB=3, b=0, c=-9. f(x)=x2 - x; Ntawm no a=1, b=-1, c=0.
Dab tsi muaj nuj nqi yog quadratic muaj nuj nqi quizlet?
Quadratic muaj nuj nqi: yog ib txoj haujlwm uas tuaj yeem sau rau hauv daim ntawv f(x)=ax2 + bx + c qhov twg a, b, thiab c yog tus lej tiag thiab a=0.
Puas yog lub quadratic muaj nuj nqi?
A quadratic muaj nuj nqi yog ua haujlwm ntawm qib ob. Daim duab ntawm ib qho kev ua quadratic yog parabola. Daim ntawv dav dav ntawm kev ua quadratic yog f (x)=ax2 + bx + c qhov twg a, b, thiab c yog cov lej tiag tiag thiab a≠0.
Puas yog plaub npaug tsis ua haujlwm?
Quadratics muaj ntau tshaj ob qhov kev daws teeb meem rau txhua qhov tso zis (dependent variable), tab sis txhua qhov kev tawm tswv yim (yooj yim sib txawv) tsuas yog muab ib qho nqi xwb. Qhov ua haujlwm f(x)=ax2 + bx + c yog ib txoj haujlwm plaub. Tam sim no, yog tias koj sim daws qhov kev sib npaug plaub npaug, koj tau txais ob txoj kev daws teeb meem ntau zaus, tab sis qhov no tsis zoo ib yam li suav cov haujlwm.
