# C3 help!Watch

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#1
f(x) is 1/cos^2 x. g(x) is 1/2f(x+pi/4). How do i show that they both cross at (0,1) ?
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6 years ago
#2
f(0) should = 1 and g(0) should = 1
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#3
(Original post by matematicas)
f(0) should = 1 and g(0) should = 1
so i should put 0 into both 1/cos^2 x and 1/2f(x+pi/4)? Thank you! i've been so confused over that one! I knew it wasn't something too complicated, only a 3 mark question and all.
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