Find the set of values of $$\(k\)$$ for which the equation $$\(3 \tan ^{2} x-5 \tan x+k=0\)$$ has no solutions. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................
Exam No：9709_m20_qp_12 Year：2020 Question No：11(b)
Answer:
Apply \(b^{2}-4 a c<0\)
\[
k>\frac{25}{12}
\]
\[
k>\frac{25}{12}
\]
Knowledge points:
1.1.2 find the discriminant of a quadratic polynomial and use the discriminant
Solution:
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