12th Class Mathematics Sample Paper Mathematics Sample Paper-7

  • question_answer
    If \[\int_{0}^{1}{(3{{x}^{2}}+2x+K)}\,dx=0,\] find K.

    Answer:

    We have, \[\int_{0}^{1}{(3{{x}^{2}}+2x+K)dx=0}\] \[\Rightarrow \]   \[[{{x}^{3}}+{{x}^{2}}+Kx]_{0}^{1}=0\] \[\Rightarrow \] \[(1+1+K)-0=0\] \[\Rightarrow \] \[K=-\,2\]


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