Invalid function name 'tansig'purelin'.报错求救

Lionoon

k=1;
# A; V0 ]+ i/ u  b$ p6 z2 qp=[-1:.05:8];
t=1+sin(k*pi/4*p);
7 U' _% m! j2 w7 y( }& Eplot(p,t,'-');
5 e9 n8 B0 o4 xtitle('要逼近的非线性函数');
xlabel('时间');
% ~3 U* M. B' x# M; q: Oylabel('非线性函数');
3 h# E, v5 w* W6 e8 fn=3;
4 a) L* y8 b4 ^( e6 _+ V4 Knet = newff(minmax(p),[n,1],{'tansig''purelin'},'trainlm ')

8 k3 U0 ]# x2 L% r

  Y2 i. ^$ y9 [8 S" X刚开始学bp网络，编译了个程序，报错
Invalid function name 'tansig'purelin'.
( P1 [, r: r4 y+ h) \7 Y: d
8 v% e" Y# z  q* h: D0 YError in network/subsasgn>getDefaultParam (line 2023)
    param = struct(feval(fcn,'defaultParam'));

Error in network/subsasgn>setLayerTransfeRFcn (line 1199)
net.layers{i}.transferParam = getDefaultParam(transferFcn);
) g% V7 e5 z0 K' q+ t
( I. W* \4 j2 Y  D, _Error in network/subsasgn>network_subsasgn (line 183)
        if isempty(err), [net,err] = setLayerTransferFcn(net,i,transferFcn); end

" T/ p* }8 v2 f- Z; @% y9 AError in network/subsasgn (line 13)
: R! A' G# q" `: Fnet = network_subsasgn(net,subscripts,v,netname);
% x) }* s5 E& O4 V' c' a& V
) T# w( q2 r& a- W- d9 BError in newff>new_5p0 (line 286)
  net.layers{i}.transferFcn = tf{i};
1 I' s. V& J: ~1 }
8 ^8 s% l- O5 O$ q3 NError in newff>create_network (line 128)
  net = new_5p0(varargin{:});

Error in newff (line 102)
  out1 = create_network(varargin{:});

% a* r, m5 Z1 t+ l2 t) s5 ?

CCxiaom

不太知道这是要实现什么功能